{"id":41648,"date":"2026-05-05T15:58:06","date_gmt":"2026-05-05T12:58:06","guid":{"rendered":"https:\/\/diagnozabam.ro\/sfaturi\/?p=41648"},"modified":"2026-05-05T15:58:06","modified_gmt":"2026-05-05T12:58:06","slug":"psu-failure-symptoms-how-to-detect-it","status":"publish","type":"post","link":"https:\/\/diagnozabam.ro\/sfaturi\/blog\/psu-failure-symptoms-how-to-detect-it\/","title":{"rendered":"PSU Failure Symptoms: How to Detect It"},"content":{"rendered":"<h2 data-section-id=\"tjezul\" data-start=\"147\" data-end=\"179\">What Are PSU Failure Symptoms<\/h2>\n<p data-start=\"181\" data-end=\"333\"><strong data-start=\"181\" data-end=\"205\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/pc-not-turning-on-complete-diagnosis-guide\/\">PSU failure<\/a> symptoms<\/strong> refer to the warning signs that your <strong data-start=\"243\" data-end=\"270\">power supply unit (<a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">PSU<\/a>)<\/strong> is no longer delivering stable or sufficient power to your <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/pc-restarts-randomly-causes-and-fix\/\">PC<\/a>.<\/p>\n<p data-start=\"335\" data-end=\"418\">The <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">PSU<\/a> is one of the most critical components. If it starts failing, it can cause:<\/p>\n<ul data-start=\"419\" data-end=\"518\">\n<li data-section-id=\"1tj1fiv\" data-start=\"419\" data-end=\"438\">random restarts<\/li>\n<li data-section-id=\"1l9o4en\" data-start=\"439\" data-end=\"461\">system instability<\/li>\n<li data-section-id=\"150juxx\" data-start=\"462\" data-end=\"481\">failure to <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/5-beeps-on-pc-startup-cpu-error-fix\/\">boot<\/a><\/li>\n<li data-section-id=\"1bwlbxn\" data-start=\"482\" data-end=\"518\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/5-beeps-on-pc-startup-cpu-error-fix\/\">hardware<\/a> damage in extreme cases<\/li>\n<\/ul>\n<p data-start=\"520\" data-end=\"634\">Unlike other components, <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">PSU<\/a> problems are often <strong data-start=\"568\" data-end=\"584\">misdiagnosed<\/strong>, because the system may still power on partially.<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"4V4WH288Ut\"><p><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0254-code-injection-pump-fuel-metering-control-intermittent\/\">P0254 Code \u2013 Injection Pump Fuel Metering Control Intermittent<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8222;P0254 Code \u2013 Injection Pump Fuel Metering Control Intermittent&#8221; &#8211; Diagnoza BAM\" src=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0254-code-injection-pump-fuel-metering-control-intermittent\/embed\/#?secret=aYgPrhCvDr#?secret=4V4WH288Ut\" data-secret=\"4V4WH288Ut\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<hr data-start=\"636\" data-end=\"639\" \/>\n<h2 data-section-id=\"1vw17vh\" data-start=\"641\" data-end=\"672\">Why PSU Failure Is Dangerous<\/h2>\n<p data-start=\"674\" data-end=\"692\">A failing <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">PSU<\/a> can:<\/p>\n<ul data-start=\"693\" data-end=\"784\">\n<li data-section-id=\"1wqq6s9\" data-start=\"693\" data-end=\"721\">deliver unstable voltage<\/li>\n<li data-section-id=\"dqe78p\" data-start=\"722\" data-end=\"757\">damage <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">motherboard<\/a>, <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/bios-beep-codes-complete-guide-for-pc-hardware-diagnosis\/\">CPU<\/a>, or <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">GPU<\/a><\/li>\n<li data-section-id=\"1djcvsv\" data-start=\"758\" data-end=\"784\">cause sudden shutdowns<\/li>\n<\/ul>\n<p data-start=\"786\" data-end=\"858\">Even if your <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/pc-restarts-randomly-causes-and-fix\/\">PC<\/a> turns on, it does NOT mean the <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">PSU<\/a> is working correctly.<\/p>\n<hr data-start=\"860\" data-end=\"863\" \/>\n<h2 data-section-id=\"9rc5k9\" data-start=\"865\" data-end=\"900\">Most Common PSU Failure Symptoms<\/h2>\n<h3 data-section-id=\"1pdwb52\" data-start=\"902\" data-end=\"924\">1. Random Restarts<\/h3>\n<p data-start=\"926\" data-end=\"952\">One of the clearest signs.<\/p>\n<ul data-start=\"954\" data-end=\"1028\">\n<li data-section-id=\"1w64x4x\" data-start=\"954\" data-end=\"993\">happens under load (gaming, stress)<\/li>\n<li data-section-id=\"1osspmh\" data-start=\"994\" data-end=\"1028\">system reboots without warning<\/li>\n<\/ul>\n<hr data-start=\"1030\" data-end=\"1033\" \/>\n<h3 data-section-id=\"1c2i9q6\" data-start=\"1035\" data-end=\"1062\">2. PC Turns On Then Off<\/h3>\n<p data-start=\"1064\" data-end=\"1075\">The system:<\/p>\n<ul data-start=\"1076\" data-end=\"1119\">\n<li data-section-id=\"2mznf8\" data-start=\"1076\" data-end=\"1094\">starts briefly<\/li>\n<li data-section-id=\"1wgv22l\" data-start=\"1095\" data-end=\"1119\">shuts down instantly<\/li>\n<\/ul>\n<p data-start=\"1121\" data-end=\"1167\">Often confused with <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/bios-beep-codes-complete-guide-for-pc-hardware-diagnosis\/\">CPU<\/a> or <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">motherboard<\/a> issues.<\/p>\n<hr data-start=\"1169\" data-end=\"1172\" \/>\n<h3 data-section-id=\"s7shkh\" data-start=\"1174\" data-end=\"1196\">3. No Power at All<\/h3>\n<ul data-start=\"1198\" data-end=\"1250\">\n<li data-section-id=\"1on7vpg\" data-start=\"1198\" data-end=\"1211\">no lights<\/li>\n<li data-section-id=\"1gwf3n7\" data-start=\"1212\" data-end=\"1223\">no fans<\/li>\n<li data-section-id=\"9ks7hx\" data-start=\"1224\" data-end=\"1250\">completely dead system<\/li>\n<\/ul>\n<p data-start=\"1252\" data-end=\"1294\">This usually indicates a fully failed <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">PSU<\/a>.<\/p>\n<hr data-start=\"1296\" data-end=\"1299\" \/>\n<h3 data-section-id=\"1hydtdt\" data-start=\"1301\" data-end=\"1333\">4. System Freezes or Crashes<\/h3>\n<p data-start=\"1335\" data-end=\"1362\">Unstable voltage can cause:<\/p>\n<ul data-start=\"1363\" data-end=\"1406\">\n<li data-section-id=\"12j0gwb\" data-start=\"1363\" data-end=\"1381\">random freezes<\/li>\n<li data-section-id=\"wp9d7n\" data-start=\"1382\" data-end=\"1406\">crashes without BSOD<\/li>\n<\/ul>\n<hr data-start=\"1408\" data-end=\"1411\" \/>\n<h3 data-section-id=\"hsisxa\" data-start=\"1413\" data-end=\"1442\">5. Burning Smell or Noise<\/h3>\n<p data-start=\"1444\" data-end=\"1466\">Serious warning signs:<\/p>\n<ul data-start=\"1467\" data-end=\"1526\">\n<li data-section-id=\"e9g8mu\" data-start=\"1467\" data-end=\"1495\">electrical burning <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/why-food-loses-its-taste-when-you-hold-your-nose\/\">smell<\/a><\/li>\n<li data-section-id=\"1nufwn0\" data-start=\"1496\" data-end=\"1526\">buzzing or <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/hdd-clicking-noise-causes-and-data-recovery-guide\/\">clicking<\/a> sounds<\/li>\n<\/ul>\n<p data-start=\"1528\" data-end=\"1556\">Turn off system immediately.<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"h4l45JrCKw\"><p><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0253-code-injection-pump-fuel-metering-control-high-input\/\">P0253 Code \u2013 Injection Pump Fuel Metering Control High Input<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8222;P0253 Code \u2013 Injection Pump Fuel Metering Control High Input&#8221; &#8211; Diagnoza BAM\" src=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0253-code-injection-pump-fuel-metering-control-high-input\/embed\/#?secret=PNyLOe0eOc#?secret=h4l45JrCKw\" data-secret=\"h4l45JrCKw\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<hr data-start=\"1558\" data-end=\"1561\" \/>\n<h3 data-section-id=\"1ljdlmr\" data-start=\"1563\" data-end=\"1600\">6. GPU or CPU Not Receiving Power<\/h3>\n<p data-start=\"1602\" data-end=\"1611\">Symptoms:<\/p>\n<ul data-start=\"1612\" data-end=\"1681\">\n<li data-section-id=\"1y0hd9v\" data-start=\"1612\" data-end=\"1626\">no display<\/li>\n<li data-section-id=\"14zqsz3\" data-start=\"1627\" data-end=\"1652\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">GPU<\/a> fans not spinning<\/li>\n<li data-section-id=\"3hm6iy\" data-start=\"1653\" data-end=\"1681\">system partially working<\/li>\n<\/ul>\n<hr data-start=\"1683\" data-end=\"1686\" \/>\n<h3 data-section-id=\"kmeet8\" data-start=\"1688\" data-end=\"1732\">7. Blue Screen or Instability Under Load<\/h3>\n<p data-start=\"1734\" data-end=\"1755\">Although less common:<\/p>\n<ul data-start=\"1756\" data-end=\"1801\">\n<li data-section-id=\"954d8m\" data-start=\"1756\" data-end=\"1801\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">PSU<\/a> instability can trigger system errors<\/li>\n<\/ul>\n<hr data-start=\"1803\" data-end=\"1806\" \/>\n<h2 data-section-id=\"3vso7r\" data-start=\"1808\" data-end=\"1829\">Less Obvious Signs<\/h2>\n<ul data-start=\"1831\" data-end=\"1951\">\n<li data-section-id=\"1p3v8mi\" data-start=\"1831\" data-end=\"1877\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/pc-restarts-randomly-causes-and-fix\/\">PC<\/a> works fine in idle but crashes in games<\/li>\n<li data-section-id=\"20apbg\" data-start=\"1878\" data-end=\"1920\">system becomes unstable after upgrades<\/li>\n<li data-section-id=\"105p05\" data-start=\"1921\" data-end=\"1951\">inconsistent <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/5-beeps-on-pc-startup-cpu-error-fix\/\">boot<\/a> behavior<\/li>\n<\/ul>\n<hr data-start=\"1953\" data-end=\"1956\" \/>\n<h2 data-section-id=\"rue745\" data-start=\"1958\" data-end=\"1989\">Common Causes of PSU Failure<\/h2>\n<h3 data-section-id=\"1b94lnf\" data-start=\"1991\" data-end=\"2013\">1. Low-Quality PSU<\/h3>\n<p data-start=\"2015\" data-end=\"2026\">Cheap PSUs:<\/p>\n<ul data-start=\"2027\" data-end=\"2074\">\n<li data-section-id=\"1mfijim\" data-start=\"2027\" data-end=\"2055\">lack protection circuits<\/li>\n<li data-section-id=\"1yhrzkb\" data-start=\"2056\" data-end=\"2074\">degrade faster<\/li>\n<\/ul>\n<hr data-start=\"2076\" data-end=\"2079\" \/>\n<h3 data-section-id=\"vwn5w3\" data-start=\"2081\" data-end=\"2100\">2. Age and Wear<\/h3>\n<p data-start=\"2102\" data-end=\"2112\">Over time:<\/p>\n<ul data-start=\"2113\" data-end=\"2156\">\n<li data-section-id=\"1t10x3z\" data-start=\"2113\" data-end=\"2135\">capacitors degrade<\/li>\n<li data-section-id=\"q1i4yt\" data-start=\"2136\" data-end=\"2156\">efficiency drops<\/li>\n<\/ul>\n<blockquote class=\"wp-embedded-content\" data-secret=\"SQeoafaVuV\"><p><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0252-code-injection-pump-fuel-metering-control-low-input\/\">P0252 Code \u2013 Injection Pump Fuel Metering Control Low Input<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8222;P0252 Code \u2013 Injection Pump Fuel Metering Control Low Input&#8221; &#8211; Diagnoza BAM\" src=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0252-code-injection-pump-fuel-metering-control-low-input\/embed\/#?secret=Cwkd0tY3zW#?secret=SQeoafaVuV\" data-secret=\"SQeoafaVuV\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<hr data-start=\"2158\" data-end=\"2161\" \/>\n<h3 data-section-id=\"xgab9d\" data-start=\"2163\" data-end=\"2182\">3. Power Surges<\/h3>\n<p data-start=\"2184\" data-end=\"2230\">Voltage spikes can damage internal components.<\/p>\n<hr data-start=\"2232\" data-end=\"2235\" \/>\n<h3 data-section-id=\"wakcoy\" data-start=\"2237\" data-end=\"2259\">4. Overloading PSU<\/h3>\n<p data-start=\"2261\" data-end=\"2287\">If <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">PSU<\/a> wattage is too low:<\/p>\n<ul data-start=\"2288\" data-end=\"2326\">\n<li data-section-id=\"5c7745\" data-start=\"2288\" data-end=\"2326\">system becomes unstable under load<\/li>\n<\/ul>\n<hr data-start=\"2328\" data-end=\"2331\" \/>\n<h3 data-section-id=\"18mm6cw\" data-start=\"2333\" data-end=\"2352\">5. Poor Cooling<\/h3>\n<p data-start=\"2354\" data-end=\"2370\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/cpu-overheating-causes-and-fix-guide\/\">Overheating<\/a> <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">PSU<\/a>:<\/p>\n<ul data-start=\"2371\" data-end=\"2418\">\n<li data-section-id=\"11tzucx\" data-start=\"2371\" data-end=\"2391\">reduces lifespan<\/li>\n<li data-section-id=\"rfspss\" data-start=\"2392\" data-end=\"2418\">increases failure risk<\/li>\n<\/ul>\n<hr data-start=\"2420\" data-end=\"2423\" \/>\n<h2 data-section-id=\"sr8nwc\" data-start=\"2425\" data-end=\"2456\">How to Diagnose PSU Problems<\/h2>\n<h3 data-section-id=\"ot9msp\" data-start=\"2458\" data-end=\"2486\">Step 1: Observe Behavior<\/h3>\n<p data-start=\"2488\" data-end=\"2497\">Look for:<\/p>\n<ul data-start=\"2498\" data-end=\"2551\">\n<li data-section-id=\"f9pczm\" data-start=\"2498\" data-end=\"2521\">restarts under load<\/li>\n<li data-section-id=\"14b3b8z\" data-start=\"2522\" data-end=\"2535\">shutdowns<\/li>\n<li data-section-id=\"16jioqy\" data-start=\"2536\" data-end=\"2551\">instability<\/li>\n<\/ul>\n<hr data-start=\"2553\" data-end=\"2556\" \/>\n<h3 data-section-id=\"dma6qo\" data-start=\"2558\" data-end=\"2593\">Step 2: Check Power Connections<\/h3>\n<ul data-start=\"2595\" data-end=\"2657\">\n<li data-section-id=\"kz1f55\" data-start=\"2595\" data-end=\"2623\">ensure cables are secure<\/li>\n<li data-section-id=\"dk0pa8\" data-start=\"2624\" data-end=\"2657\">verify <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/bios-beep-codes-complete-guide-for-pc-hardware-diagnosis\/\">CPU<\/a> and <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">GPU<\/a> connectors<\/li>\n<\/ul>\n<hr data-start=\"2659\" data-end=\"2662\" \/>\n<h3 data-section-id=\"f6qnqs\" data-start=\"2664\" data-end=\"2697\">Step 3: Test With Another PSU<\/h3>\n<p data-start=\"2699\" data-end=\"2724\">The most reliable method.<\/p>\n<hr data-start=\"2726\" data-end=\"2729\" \/>\n<h3 data-section-id=\"1v2huco\" data-start=\"2731\" data-end=\"2770\">Step 4: Remove High Load Components<\/h3>\n<p data-start=\"2772\" data-end=\"2789\">Test system with:<\/p>\n<ul data-start=\"2790\" data-end=\"2810\">\n<li data-section-id=\"ac079x\" data-start=\"2790\" data-end=\"2810\">minimal <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/5-beeps-on-pc-startup-cpu-error-fix\/\">hardware<\/a><\/li>\n<\/ul>\n<hr data-start=\"2812\" data-end=\"2815\" \/>\n<h3 data-section-id=\"wxi64i\" data-start=\"2817\" data-end=\"2845\">Step 5: Listen and Smell<\/h3>\n<ul data-start=\"2847\" data-end=\"2882\">\n<li data-section-id=\"1eu3yqb\" data-start=\"2847\" data-end=\"2864\">unusual noise<\/li>\n<li data-section-id=\"e46hqw\" data-start=\"2865\" data-end=\"2882\">burning <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/why-food-loses-its-taste-when-you-hold-your-nose\/\">smell<\/a><\/li>\n<\/ul>\n<hr data-start=\"2884\" data-end=\"2887\" \/>\n<h2 data-section-id=\"1gmicbp\" data-start=\"2889\" data-end=\"2913\">How to Fix PSU Issues<\/h2>\n<ul data-start=\"2915\" data-end=\"3020\">\n<li data-section-id=\"1aosa0r\" data-start=\"2915\" data-end=\"2948\">replace <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">PSU<\/a> with quality unit<\/li>\n<li data-section-id=\"1iu6w55\" data-start=\"2949\" data-end=\"2975\">ensure correct wattage<\/li>\n<li data-section-id=\"5d1x3m\" data-start=\"2976\" data-end=\"3020\">use certified <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">PSU<\/a> (80+ Bronze or higher)<\/li>\n<\/ul>\n<p data-start=\"3022\" data-end=\"3081\">In most cases:<br \/>\n\ud83d\udc49 <strong data-start=\"3040\" data-end=\"3081\">replacement is the only real solution<\/strong><\/p>\n<p data-start=\"3083\" data-end=\"3117\">PSUs are not meant to be repaired.<\/p>\n<hr data-start=\"3119\" data-end=\"3122\" \/>\n<h2 data-section-id=\"1s7339j\" data-start=\"3124\" data-end=\"3165\">Signs You Must Replace PSU Immediately<\/h2>\n<ul data-start=\"3167\" data-end=\"3270\">\n<li data-section-id=\"e46hqw\" data-start=\"3167\" data-end=\"3184\">burning <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/why-food-loses-its-taste-when-you-hold-your-nose\/\">smell<\/a><\/li>\n<li data-section-id=\"1uas1mx\" data-start=\"3185\" data-end=\"3216\">random shutdowns increasing<\/li>\n<li data-section-id=\"yd3zoc\" data-start=\"3217\" data-end=\"3251\">system unstable after upgrades<\/li>\n<li data-section-id=\"1a43qel\" data-start=\"3252\" data-end=\"3270\">visible damage<\/li>\n<\/ul>\n<hr data-start=\"3272\" data-end=\"3275\" \/>\n<h2 data-section-id=\"mru0sq\" data-start=\"3277\" data-end=\"3294\">What NOT to Do<\/h2>\n<p data-start=\"3296\" data-end=\"3302\">Avoid:<\/p>\n<ul data-start=\"3303\" data-end=\"3420\">\n<li data-section-id=\"1q8bpqp\" data-start=\"3303\" data-end=\"3335\">continuing to use faulty <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">PSU<\/a><\/li>\n<li data-section-id=\"1yvwscn\" data-start=\"3336\" data-end=\"3364\">buying cheap replacement<\/li>\n<li data-section-id=\"35ans4\" data-start=\"3365\" data-end=\"3392\">ignoring early symptoms<\/li>\n<li data-section-id=\"1vec7cp\" data-start=\"3393\" data-end=\"3420\">opening <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/gpu-fans-spin-but-no-display-complete-fix-guide\/\">PSU<\/a> (dangerous)<\/li>\n<\/ul>\n<hr data-start=\"3422\" data-end=\"3425\" \/>\n<h2 data-section-id=\"8dtpi\" data-start=\"3427\" data-end=\"3440\">Conclusion<\/h2>\n<p data-start=\"3442\" data-end=\"3545\"><strong data-start=\"3442\" data-end=\"3466\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/pc-not-turning-on-complete-diagnosis-guide\/\">PSU failure<\/a> symptoms<\/strong> should never be ignored. A failing power supply can damage your entire system.<\/p>\n<p data-start=\"3547\" data-end=\"3569\">Early detection helps:<\/p>\n<ul data-start=\"3570\" data-end=\"3652\">\n<li data-section-id=\"1d6afar\" data-start=\"3570\" data-end=\"3597\">prevent <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/5-beeps-on-pc-startup-cpu-error-fix\/\">hardware<\/a> damage<\/li>\n<li data-section-id=\"lm40dt\" data-start=\"3598\" data-end=\"3627\">maintain system stability<\/li>\n<li data-section-id=\"13sbb71\" data-start=\"3628\" data-end=\"3652\">avoid costly repairs<\/li>\n<\/ul>\n<blockquote class=\"wp-embedded-content\" data-secret=\"kVrkrR3cxr\"><p><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0250-code-wastegate-solenoid-b-high-input-explained\/\">P0250 Code \u2013 Wastegate Solenoid B High Input Explained<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8222;P0250 Code \u2013 Wastegate Solenoid B High Input Explained&#8221; &#8211; Diagnoza BAM\" src=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0250-code-wastegate-solenoid-b-high-input-explained\/embed\/#?secret=3q91AQ4SbP#?secret=kVrkrR3cxr\" data-secret=\"kVrkrR3cxr\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Are PSU Failure Symptoms PSU failure symptoms refer to the warning signs that your power supply unit (PSU) is no longer delivering stable or sufficient power to your PC. The PSU is one of the most critical components. If it starts failing, it can cause: random restarts system instability failure to boot hardware damage [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":41650,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","ai_generated_summary":"","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}},"categories":[36515],"tags":[36299,36339,46297,47682,47686,46487,47680,47678,47684,47688],"class_list":["post-41648","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-it","tag-bam","tag-diagnoza","tag-hardware-diagnostics","tag-pc-random-restart-psu","tag-pc-shutdown-issue","tag-pc-troubleshooting","tag-power-supply-problem","tag-psu-failure-symptoms","tag-psu-not-working","tag-unstable-power-pc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>PSU Failure Symptoms: How to Detect It - Diagnoza BAM<\/title>\n<meta name=\"description\" content=\"PSU failure symptoms include random restarts, shutdowns and instability. 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Many users misdiagnose PSU issues as: GPU failure motherboard problems RAM instability In reality, a failing PSU can\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":41669,"url":"https:\/\/diagnozabam.ro\/sfaturi\/blog\/how-to-test-psu-without-tools\/","url_meta":{"origin":41648,"position":1},"title":"How to Test PSU Without Tools","author":"Bejenaru Alexandru Ionut","date":"8 mai 2026","format":false,"excerpt":"What Does \u201cTest PSU Without Tools\u201d Mean The process to test PSU without tools refers to basic methods you can use to check if your power supply unit (PSU) is working, without using professional equipment like a multimeter or PSU tester. 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