{"id":48710,"date":"2026-11-09T17:07:30","date_gmt":"2026-11-09T14:07:30","guid":{"rendered":"https:\/\/diagnozabam.ro\/sfaturi\/?p=48710"},"modified":"2026-11-09T17:07:30","modified_gmt":"2026-11-09T14:07:30","slug":"dead-cmos-battery-9-signs-your-pc-is-warning-you","status":"publish","type":"post","link":"https:\/\/diagnozabam.ro\/sfaturi\/blog\/dead-cmos-battery-9-signs-your-pc-is-warning-you\/","title":{"rendered":"Dead CMOS Battery? 9 Signs Your PC Is Warning You"},"content":{"rendered":"<h2 dir=\"ltr\" aria-level=\"4\">Dead CMOS Battery Symptoms: How to Test and Replace It<\/h2>\n<p dir=\"ltr\"><strong>The most common sign of a dead CMOS battery is a clock that resets to the wrong date every time you unplug the PC.<\/strong> You may also see BIOS errors, lost boot settings and slow memory speed. The fix is cheap. A new coin cell costs very little, and the job takes about five minutes.<\/p>\n<p dir=\"ltr\">This guide shows the symptoms, the quick tests and the replacement steps. It also covers what to do after the swap, because some settings do not come back by themselves.<\/p>\n<hr \/>\n<h3 dir=\"ltr\" aria-level=\"5\">What Is the CMOS Battery?<\/h3>\n<p dir=\"ltr\">The CMOS battery is a small round coin cell on the motherboard. On most PCs it is a <strong>CR2032<\/strong>, a 3 V lithium battery.<\/p>\n<p dir=\"ltr\">Its job is simple. It keeps a small amount of memory alive while the PC is switched off and unplugged. That memory stores:<\/p>\n<ul dir=\"ltr\">\n<li>The date and time<\/li>\n<li>The BIOS or UEFI settings<\/li>\n<li>The boot order<\/li>\n<li>Memory profiles such as XMP or EXPO<\/li>\n<li>Fan curves and other custom values<\/li>\n<\/ul>\n<p dir=\"ltr\">Without power, this memory would be wiped each time you shut the PC down.<\/p>\n<div>\n<div dir=\"ltr\" tabindex=\"0\" role=\"group\" aria-label=\"Code\">\n<div>\n<div><\/div>\n<\/div>\n<div>\n<pre><code>Wall power -&gt; PSU -&gt; Motherboard (standby power keeps settings while PC is off)\r\n                          |\r\n                 PSU unplugged or switch off\r\n                          |\r\n                   CMOS battery takes over\r\n                          |\r\n              Clock + BIOS settings stay saved<\/code><\/pre>\n<\/div>\n<\/div>\n<\/div>\n<blockquote dir=\"ltr\">\n<p dir=\"ltr\">\u2139\ufe0f <strong>Technical Note:<\/strong> When the PC is plugged in, the power supply gives the motherboard a small standby current. In that state, the battery is barely used. That is why a weak battery can hide for a long time. The symptoms show up when the PC loses mains power.<\/p>\n<\/blockquote>\n<blockquote class=\"wp-embedded-content\" data-secret=\"vYzoINtE7F\"><p><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/pc-not-turning-on-complete-diagnosis-guide\/\">PC Not Turning On: Complete Diagnosis Guide<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201cPC Not Turning On: Complete Diagnosis Guide\u201d \u2014 Diagnoza BAM\" src=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/pc-not-turning-on-complete-diagnosis-guide\/embed\/#?secret=tbmyEbeXT7#?secret=vYzoINtE7F\" data-secret=\"vYzoINtE7F\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<hr \/>\n<h3 dir=\"ltr\" aria-level=\"5\">How Long Does a CMOS Battery Last?<\/h3>\n<p dir=\"ltr\">Most last between three and ten years. Several things shorten that life:<\/p>\n<ul dir=\"ltr\">\n<li>Frequent unplugging or switching off the PSU<\/li>\n<li>A PC stored for months without power<\/li>\n<li>Heat inside the case<\/li>\n<li>A cheap or old battery<\/li>\n<li>A motherboard with a small standby leak<\/li>\n<\/ul>\n<p dir=\"ltr\">A PC that stays plugged in all day can keep the same battery for a very long time. A laptop or a spare PC that sits unplugged drains it much faster.<\/p>\n<hr \/>\n<h3 dir=\"ltr\" aria-level=\"5\">The 9 Dead CMOS Battery Symptoms<\/h3>\n<h4 dir=\"ltr\" aria-level=\"6\">1. The Date and Time Reset<\/h4>\n<p dir=\"ltr\">This is the classic sign. You set the clock. After a power cut or an unplugged night, the date jumps back to an old year. It often shows the year of the BIOS release or a default like 2000.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">2. Wrong Time in Windows<\/h4>\n<p dir=\"ltr\">Windows normally syncs the time online. But if the PC starts with a wrong hardware clock, it can run with a wrong time until the sync happens. If you are offline, the error stays.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">3. Browser Security Errors<\/h4>\n<p dir=\"ltr\">A wrong date breaks security certificates. Websites then show messages like \u201cYour connection is not private.\u201d The cause is not the site. It is your clock.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">4. \u201cCMOS Checksum Error\u201d or \u201cCMOS Battery Low\u201d<\/h4>\n<p dir=\"ltr\">Many boards show a message at startup. Typical texts include:<\/p>\n<ul dir=\"ltr\">\n<li>CMOS checksum error<\/li>\n<li>CMOS battery failure<\/li>\n<li>CMOS read error<\/li>\n<li>System battery voltage is low<\/li>\n<\/ul>\n<p dir=\"ltr\">These messages point straight to the battery.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">5. \u201cPress F1 to Continue\u201d at Every Start<\/h4>\n<p dir=\"ltr\">The BIOS lost its settings and falls back to defaults. It then stops and waits for you. You have to press a key to continue. The message returns on every boot.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">6. Boot Order Resets<\/h4>\n<p dir=\"ltr\">You set the boot drive correctly. After a power loss, the PC tries another device. It may show \u201cNo bootable device\u201d or boot from the wrong disk. Your settings did not survive.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">7. Memory Runs Slower Than Before<\/h4>\n<p dir=\"ltr\">Memory profiles like XMP and EXPO are stored in BIOS settings. If they reset, the RAM drops to a basic speed. A kit sold as 6000 MHz may run at 4800 MHz or lower. The PC feels slower, and you may not know why.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">8. Custom BIOS Settings Disappear<\/h4>\n<p dir=\"ltr\">Overclock values, fan curves, virtualization settings and other custom options return to default. If you keep losing them, check the battery first.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">9. The PC Fails to Start or Posts Slowly<\/h4>\n<p dir=\"ltr\">On some boards, a very weak battery causes boot delays or failed starts. The board cannot read its own settings and tries to rebuild them. Some boards also give beep codes.<\/p>\n<blockquote dir=\"ltr\">\n<p dir=\"ltr\">\u26a0\ufe0f <strong>WARNING:<\/strong> Do not assume the battery is the only cause of a no-boot problem. A PC that does not start can have a faulty power supply, RAM or motherboard. Test the battery, but keep an open mind.<\/p>\n<\/blockquote>\n<blockquote class=\"wp-embedded-content\" data-secret=\"vYzoINtE7F\"><p><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/pc-not-turning-on-complete-diagnosis-guide\/\">PC Not Turning On: Complete Diagnosis Guide<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201cPC Not Turning On: Complete Diagnosis Guide\u201d \u2014 Diagnoza BAM\" src=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/pc-not-turning-on-complete-diagnosis-guide\/embed\/#?secret=tbmyEbeXT7#?secret=vYzoINtE7F\" data-secret=\"vYzoINtE7F\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<hr \/>\n<h3 dir=\"ltr\" aria-level=\"5\">Quick Symptom Table<\/h3>\n<div dir=\"ltr\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Symptom<\/th>\n<th scope=\"col\">Likely cause<\/th>\n<th scope=\"col\">Priority<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Date resets after power loss<\/td>\n<td>Weak or dead CMOS battery<\/td>\n<td>High<\/td>\n<\/tr>\n<tr>\n<td>CMOS checksum error<\/td>\n<td>Dead battery<\/td>\n<td>High<\/td>\n<\/tr>\n<tr>\n<td>F1 prompt every boot<\/td>\n<td>Lost settings<\/td>\n<td>High<\/td>\n<\/tr>\n<tr>\n<td>Boot order resets<\/td>\n<td>Dead battery<\/td>\n<td>Medium<\/td>\n<\/tr>\n<tr>\n<td>RAM runs at base speed<\/td>\n<td>Memory profile lost<\/td>\n<td>Medium<\/td>\n<\/tr>\n<tr>\n<td>Website certificate errors<\/td>\n<td>Wrong system date<\/td>\n<td>Medium<\/td>\n<\/tr>\n<tr>\n<td>Random BIOS reset<\/td>\n<td>Battery or a loose battery holder<\/td>\n<td>Medium<\/td>\n<\/tr>\n<tr>\n<td>No boot, nothing else<\/td>\n<td>Needs wider diagnosis<\/td>\n<td>Check other parts<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<hr \/>\n<h3 dir=\"ltr\" aria-level=\"5\">How to Test the CMOS Battery<\/h3>\n<p dir=\"ltr\">You can confirm the problem in a few ways.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">Method 1: Check the Date Test<\/h4>\n<ol dir=\"ltr\">\n<li>Set the correct date and time in the BIOS.<\/li>\n<li>Shut down the PC.<\/li>\n<li>Switch off the PSU and unplug the power cable.<\/li>\n<li>Wait for about 30 minutes.<\/li>\n<li>Plug in and start the PC. Check the date in the BIOS.<\/li>\n<\/ol>\n<p dir=\"ltr\">If the date is wrong, the battery is not holding the settings.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">Method 2: Measure the Voltage<\/h4>\n<p dir=\"ltr\">This is the most reliable test. You need a multimeter.<\/p>\n<ol dir=\"ltr\">\n<li>Shut down the PC and unplug it.<\/li>\n<li>Discharge yourself by touching bare metal on the case.<\/li>\n<li>Remove the battery from its holder.<\/li>\n<li>Set the multimeter to DC volts.<\/li>\n<li>Touch the red probe to the flat positive side (marked +).<\/li>\n<li>Touch the black probe to the negative edge or the holder contact.<\/li>\n<\/ol>\n<div dir=\"ltr\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Voltage<\/th>\n<th scope=\"col\">Meaning<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>3.0 V to 3.3 V<\/td>\n<td>Healthy<\/td>\n<\/tr>\n<tr>\n<td>2.8 V to 3.0 V<\/td>\n<td>Aging, replace soon<\/td>\n<\/tr>\n<tr>\n<td>2.5 V to 2.8 V<\/td>\n<td>Weak, replace now<\/td>\n<\/tr>\n<tr>\n<td>Below 2.5 V<\/td>\n<td>Dead<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<blockquote dir=\"ltr\">\n<p dir=\"ltr\">\u2139\ufe0f <strong>Technical Note:<\/strong> A new CR2032 shows around 3.2 V or slightly more. A reading under 2.8 V often causes the first errors. A battery can pass a simple voltage test and still fail under load. If symptoms continue, replace it anyway. It costs very little.<\/p>\n<\/blockquote>\n<h4 dir=\"ltr\" aria-level=\"6\">Method 3: Look for Other Signs<\/h4>\n<p dir=\"ltr\">Check the PC\u2019s behavior over a few days. If the clock resets every time you remove power, the case is clear. A one-time reset can also come from a BIOS update or a manual reset.<\/p>\n<hr \/>\n<h3 dir=\"ltr\" aria-level=\"5\">How to Replace a CMOS Battery on a Desktop PC<\/h3>\n<h4 dir=\"ltr\" aria-level=\"6\">What You Need<\/h4>\n<ul dir=\"ltr\">\n<li>A new CR2032 battery (check that your board uses this type)<\/li>\n<li>A small flat screwdriver or a plastic tool<\/li>\n<li>A multimeter (optional)<\/li>\n<\/ul>\n<h4 dir=\"ltr\" aria-level=\"6\">Step 1: Back Up Your BIOS Settings<\/h4>\n<p dir=\"ltr\">Start the PC and enter the BIOS. Take photos of the important pages. Note the boot order, memory profile, fan settings and any custom values. Some boards let you save a profile to a USB drive.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">Step 2: Power Off and Unplug<\/h4>\n<p dir=\"ltr\">Shut down the PC. Switch off the PSU. Unplug the power cable. Hold the power button for a few seconds to drain the remaining charge.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">Step 3: Ground Yourself<\/h4>\n<p dir=\"ltr\">Touch a bare metal part of the case. This removes static electricity. An anti-static wrist strap is even better.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">Step 4: Open the Case and Find the Battery<\/h4>\n<p dir=\"ltr\">Remove the side panel. Look for the shiny coin cell on the motherboard. It is often near the chipset or below the graphics card slot. A large graphics card can hide it. You may need to remove the card to reach the battery.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">Step 5: Remove the Old Battery<\/h4>\n<p dir=\"ltr\">Most holders have a small metal clip. Push it gently to the side. The battery pops up. Take it out with your fingers or a plastic tool.<\/p>\n<blockquote dir=\"ltr\">\n<p dir=\"ltr\">\u26a0\ufe0f <strong>WARNING:<\/strong> Never use a metal screwdriver to pry the battery near other parts. A slip can short the board. Use a plastic tool when possible.<\/p>\n<\/blockquote>\n<h4 dir=\"ltr\" aria-level=\"6\">Step 6: Insert the New Battery<\/h4>\n<p dir=\"ltr\">Place the new battery with the <strong>+ side facing up<\/strong>. Press it down until it clicks. Check that it sits flat and firm.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">Step 7: Close and Restart<\/h4>\n<p dir=\"ltr\">Close the case. Plug in the power cable. Switch on the PSU. Start the PC.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">Step 8: Reset the BIOS Settings<\/h4>\n<p dir=\"ltr\">The board may show a CMOS or checksum message once. This is normal after a battery change. Enter the BIOS and set:<\/p>\n<ol dir=\"ltr\">\n<li>The correct date and time<\/li>\n<li>The boot drive order<\/li>\n<li>The XMP or EXPO memory profile<\/li>\n<li>Fan curves and any custom settings<\/li>\n<li>Save and exit<\/li>\n<\/ol>\n<p dir=\"ltr\">Then restart. Check that the system boots and the settings stay.<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"oDedxNCVBM\"><p><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/bios-beep-codes-complete-guide-for-pc-hardware-diagnosis\/\">BIOS Beep Codes: Complete Guide for PC Hardware Diagnosis<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201cBIOS Beep Codes: Complete Guide for PC Hardware Diagnosis\u201d \u2014 Diagnoza BAM\" src=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/bios-beep-codes-complete-guide-for-pc-hardware-diagnosis\/embed\/#?secret=00wRaQMtal#?secret=oDedxNCVBM\" data-secret=\"oDedxNCVBM\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<hr \/>\n<h3 dir=\"ltr\" aria-level=\"5\">Laptops: A Little More Work<\/h3>\n<p dir=\"ltr\">Laptops often use a small battery on a thin cable, or a soldered one. Access varies a lot.<\/p>\n<ul dir=\"ltr\">\n<li>Some laptops have a service panel on the bottom. You reach the battery quickly.<\/li>\n<li>Others need the full back cover removed.<\/li>\n<li>Some use a soldered cell. Replacement needs a repair shop.<\/li>\n<\/ul>\n<p dir=\"ltr\">Check the service manual for your model before you open it. Always disconnect the main battery and the charger first. Do not force plastic clips.<\/p>\n<hr \/>\n<h3 dir=\"ltr\" aria-level=\"5\">After the Replacement: What If the Problem Stays?<\/h3>\n<p dir=\"ltr\">If the clock still resets after you install a new battery, look at these points:<\/p>\n<ul dir=\"ltr\">\n<li><strong>A weak new battery.<\/strong> Test it with the multimeter. Old stock can already be low.<\/li>\n<li><strong>A loose holder.<\/strong> Check that the battery clip makes firm contact.<\/li>\n<li><strong>A damaged holder.<\/strong> Bent contacts can cause poor connection.<\/li>\n<li><strong>A board fault.<\/strong> A leak or failing circuit can drain the cell.<\/li>\n<li><strong>A BIOS bug.<\/strong> Update the BIOS to the latest stable version.<\/li>\n<li><strong>The CMOS jumper is in the reset position.<\/strong> Check the manual.<\/li>\n<\/ul>\n<p dir=\"ltr\">If none of these helps, the motherboard may need service.<\/p>\n<hr \/>\n<h3 dir=\"ltr\" aria-level=\"5\">Can You Run a PC Without a CMOS Battery?<\/h3>\n<p dir=\"ltr\">Yes, in many cases. The PC will start, as long as the motherboard does not require the battery. But you will see these effects:<\/p>\n<ul dir=\"ltr\">\n<li>The date and time reset every time you remove power.<\/li>\n<li>The BIOS loses its settings.<\/li>\n<li>Some boards show an error or demand a key press at each start.<\/li>\n<li>Some boards refuse to boot properly.<\/li>\n<\/ul>\n<p dir=\"ltr\">It works in an emergency. It is not a good long-term setup.<\/p>\n<hr \/>\n<h3 dir=\"ltr\" aria-level=\"5\">Safe Handling and Disposal<\/h3>\n<p dir=\"ltr\">Coin cell batteries can be dangerous.<\/p>\n<ul dir=\"ltr\">\n<li>Keep them away from children and pets. Swallowing one can cause serious internal burns within hours.<\/li>\n<li>Do not short the battery or crush it.<\/li>\n<li>Do not throw it in the household trash. Use a battery recycling point.<\/li>\n<li>Store spare cells in a dry, cool place, away from metal objects.<\/li>\n<\/ul>\n<hr \/>\n<h3 dir=\"ltr\" aria-level=\"5\">Mistakes to Avoid<\/h3>\n<ul dir=\"ltr\">\n<li><strong>Buying the wrong type.<\/strong> Check the number on the old battery. Most are CR2032, but some boards use others.<\/li>\n<li><strong>Installing it upside down.<\/strong> The + side faces up on most holders.<\/li>\n<li><strong>Forgetting to save BIOS settings.<\/strong> You will have to set everything again.<\/li>\n<li><strong>Replacing the battery with the PC plugged in.<\/strong> Always unplug first.<\/li>\n<li><strong>Using metal tools that can short the board.<\/strong><\/li>\n<li><strong>Ignoring memory speed after a reset.<\/strong> Re-enable XMP or EXPO.<\/li>\n<li><strong>Blaming the battery for every boot problem.<\/strong> Test before you assume.<\/li>\n<li><strong>Using a rechargeable cell like a LIR2032.<\/strong> Its voltage is higher and the board may not handle it well.<\/li>\n<\/ul>\n<hr \/>\n<h3 dir=\"ltr\" aria-level=\"5\">Quick Checklist<\/h3>\n<ol dir=\"ltr\">\n<li>Check the date and time after a power loss.<\/li>\n<li>Look for CMOS or checksum messages at startup.<\/li>\n<li>Photograph the BIOS settings.<\/li>\n<li>Shut down, switch off the PSU and unplug the PC.<\/li>\n<li>Ground yourself and open the case.<\/li>\n<li>Measure the old battery, if you can.<\/li>\n<li>Replace it with a fresh CR2032, + side up.<\/li>\n<li>Close the case and start the PC.<\/li>\n<li>Set the date, boot order and memory profile.<\/li>\n<li>Check again after a full power-off to confirm the fix.<\/li>\n<\/ol>\n<hr \/>\n<h3 dir=\"ltr\" aria-level=\"5\">FAQ<\/h3>\n<h4 dir=\"ltr\" aria-level=\"6\">What are the symptoms of a dead CMOS battery?<\/h4>\n<p dir=\"ltr\">The date and time reset, the BIOS shows CMOS errors and the boot order resets. Some PCs also lose the memory profile, so the RAM runs slower. A prompt like \u201cPress F1 to continue\u201d can appear at every start.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">Can a dead CMOS battery stop a PC from booting?<\/h4>\n<p dir=\"ltr\">Sometimes. Many PCs still start, but some boards show errors or fail to boot properly. If the PC does not start at all, test the power supply, the RAM and the motherboard too.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">How long does a CMOS battery last?<\/h4>\n<p dir=\"ltr\">Usually three to ten years. A PC that is often unplugged uses it up faster. A PC that stays plugged in can last much longer.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">How do I check if my CMOS battery is dead?<\/h4>\n<p dir=\"ltr\">Set the correct date in the BIOS, then unplug the PC for about 30 minutes. If the date is wrong when you start it again, the battery is weak. You can also measure it with a multimeter. A reading under 2.8 V means replace it.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">What type of battery does a CMOS use?<\/h4>\n<p dir=\"ltr\">Most motherboards use a CR2032 3 V lithium coin cell. Check the old battery or your motherboard manual before you buy a new one.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">Will I lose my data if I replace the CMOS battery?<\/h4>\n<p dir=\"ltr\">No. Your files stay on the drive. You only lose BIOS settings like the date, boot order and memory profile. Note them first and set them again afterward.<\/p>\n<h4 dir=\"ltr\" aria-level=\"6\">Can I replace the CMOS battery myself?<\/h4>\n<p dir=\"ltr\">Yes, on most desktops. It takes a few minutes and needs no special skill. On some laptops, access is harder. Check the service manual first.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dead CMOS Battery Symptoms: How to Test and Replace It The most common sign of a dead CMOS battery is a clock that resets to the wrong date every time you unplug the PC. You may also see BIOS errors, lost boot settings and slow memory speed. The fix is cheap. A new coin cell [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":26921,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[36515],"tags":[56189,49903,56191,46487],"class_list":["post-48710","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-it","tag-bios-settings","tag-cmos-battery","tag-motherboard","tag-pc-troubleshooting"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Dead CMOS Battery? 9 Signs Your PC Is Warning You - DBAM<\/title>\n<meta name=\"description\" content=\"Wrong date, BIOS errors, PC won\u2019t boot? 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While general system errors can point to memory or graphics\u2026","rel":"","context":"\u00cen \u201eIT-EN\u201d","block_context":{"text":"IT-EN","link":"https:\/\/diagnozabam.ro\/sfaturi\/category\/it\/"},"img":{"alt_text":"Fujitsu Server Mainboard Motherboard RX100 S7 S26361 D3034 B100","src":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2025\/10\/Fujitsu-Server-Mainboard-Motherboard-RX100-S7-S26361-D3034-B100.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2025\/10\/Fujitsu-Server-Mainboard-Motherboard-RX100-S7-S26361-D3034-B100.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2025\/10\/Fujitsu-Server-Mainboard-Motherboard-RX100-S7-S26361-D3034-B100.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2025\/10\/Fujitsu-Server-Mainboard-Motherboard-RX100-S7-S26361-D3034-B100.webp?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2025\/10\/Fujitsu-Server-Mainboard-Motherboard-RX100-S7-S26361-D3034-B100.webp?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":40512,"url":"https:\/\/diagnozabam.ro\/sfaturi\/blog\/pc-beeping-continuously-causes-and-how-to-fix-it\/","url_meta":{"origin":48710,"position":3},"title":"PC Beeping Continuously: Causes and How to Fix It","author":"Bejenaru Alexandru Ionut","date":"21 martie 2026","format":false,"excerpt":"A PC that produces continuous beeping sounds during startup is a clear sign that something is wrong at the hardware level. These sounds are generated by the BIOS during the POST (Power-On Self Test) process, before the system loads the operating system. In most cases, continuous beeping indicates a serious\u2026","rel":"","context":"\u00cen \u201eIT-EN\u201d","block_context":{"text":"IT-EN","link":"https:\/\/diagnozabam.ro\/sfaturi\/category\/it\/"},"img":{"alt_text":"wp","src":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/03\/wp-17740335830706547887783535806789.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/03\/wp-17740335830706547887783535806789.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/03\/wp-17740335830706547887783535806789.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/03\/wp-17740335830706547887783535806789.webp?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/03\/wp-17740335830706547887783535806789.webp?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":47476,"url":"https:\/\/diagnozabam.ro\/sfaturi\/blog\/is-your-motherboard-dead-5-definitive-tests\/","url_meta":{"origin":48710,"position":4},"title":"Is Your Motherboard Dead? 5 Definitive Tests","author":"Bejenaru Alexandru Ionut","date":"9 septembrie 2026","format":false,"excerpt":"How to Tell If Your Motherboard Is Dead (5 Definitive Tests) A motherboard rarely announces its own death clearly. It usually just stops responding, and every other component becomes a suspect too. 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When your computer powers on, the BIOS or UEFI firmware runs a series of checks to verify that critical components like RAM, CPU, and motherboard are\u2026","rel":"","context":"\u00cen \u201eIT-EN\u201d","block_context":{"text":"IT-EN","link":"https:\/\/diagnozabam.ro\/sfaturi\/category\/it\/"},"img":{"alt_text":"asus xc","src":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/04\/asus_x550c.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/04\/asus_x550c.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/04\/asus_x550c.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/04\/asus_x550c.webp?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/04\/asus_x550c.webp?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/04\/asus_x550c.webp?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"jetpack_shortlink":"https:\/\/wp.me\/pf97go-cFE","jetpack_featured_media_url":"https:\/\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2025\/10\/Fujitsu-Server-Mainboard-Motherboard-RX100-S7-S26361-D3034-B100.webp","pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts\/48710","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/comments?post=48710"}],"version-history":[{"count":2,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts\/48710\/revisions"}],"predecessor-version":[{"id":48723,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts\/48710\/revisions\/48723"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/media\/26921"}],"wp:attachment":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/media?parent=48710"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/categories?post=48710"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/tags?post=48710"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}