Ever tried to boot your PC but it immediately turns off? Could be a CPU issue. This week for DIY in 5, we investigate this common PC problem and how to fix it.
\nLast episode we looked at motherboard issues, but CPU hiccups can be equally disastrous. Issues such as age, heat, stress, and power surges can all cause problems. If you start your CPU and it powered down immediately you can ask yourself \u201cWas this CPU old? Have I been getting temperature warnings? Have I been trying to run too much with it?\u201d There\u2019s always a rational explanation. DIY in 5 has already done the work on this part, so we can skip to the symptoms and talk about diagnosis.<\/p>\n
Symptoms
\nBased on the four causes above, these symptoms will generally be exhibited by the PC.
\n– The PC does not POST
\n– PC turns on, fans are running, still does not POST
\n– As we discussed, PC turns on and immediately shuts down
\n– Screen freezes
\n– Blue screen of death <\/p>\n
Causes
\nTypically the root causes of these symptoms are as follows:
\n– Heat and dust
\n– Thermal compound
\n– Leaks or bulging capacitors
\n– Power supply
\n– Video card capacitors and fan
\nArmed with this information, the first thing to check for is heat and dust. Over time, fans die, and thermal compound on the CPU dissolves and needs to be reapplied. So, let\u2019s open up the PC and examine our CPU. We\u2019re going to clean out all dust. Target the fans, especially the CPU fan. Since the PC is already open it\u2019s a good time to remove the heatsink and fan from the CPU to apply another layer of thermal paste. It\u2019s also a good idea to check for any loose screws or cables that may be causing a short. Loose cables or unseated screws may make the PC shutdown a split second after turning on.
\nNow, let\u2019s try to reboot your PC to see if it POSTs. If it does, it\u2019s highly recommended to go into your BIOS and monitor the CPU temperature for about ten minutes. It should stay pretty stable and not push towards the warning limits. If it\u2019s stable, congratulations! You are done.
\nBut what happens if you turn on your PC, immediately hear fans, but it still doesn\u2019t POST? Check that your CPU fan is actually running. This is a more common issue than you\u2019d think. Dust kills fans over time, and over the life of your CPU, if the fans are not cleaned regularly, or if you run your PC constantly, this can happen. Now, turn the PC back on, and let\u2019s hope that it POSTs.
\nGenerally, in most cases, these two methods will also take care of screen freezes and blue screens. However, in some instances there may be another cause, as with powering on but immediately powering off.<\/p>\n
PSU Timecodes: Ever tried to boot your PC but it immediately turns off? Could be a CPU issue. This week for DIY<\/p>\n","protected":false},"author":1,"featured_media":5150,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-5144","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-technology"],"_links":{"self":[{"href":"https:\/\/nicheblog.top\/tech\/wp-json\/wp\/v2\/posts\/5144","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nicheblog.top\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nicheblog.top\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nicheblog.top\/tech\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nicheblog.top\/tech\/wp-json\/wp\/v2\/comments?post=5144"}],"version-history":[{"count":0,"href":"https:\/\/nicheblog.top\/tech\/wp-json\/wp\/v2\/posts\/5144\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nicheblog.top\/tech\/wp-json\/wp\/v2\/media\/5150"}],"wp:attachment":[{"href":"https:\/\/nicheblog.top\/tech\/wp-json\/wp\/v2\/media?parent=5144"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nicheblog.top\/tech\/wp-json\/wp\/v2\/categories?post=5144"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nicheblog.top\/tech\/wp-json\/wp\/v2\/tags?post=5144"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nPower supply\/PSU issues can sometimes be hard to distinguish from CPU issues. For instance, if your CPU is starting to overheat, you could experience reboots, as it\u2019s possible to set up BIOS to automatically shut down in cases of high CPU temperature. Or the CPU could be unstable and Windows throws a blue screen. However, the instability could be caused by the power supply not being able to properly deliver power to the components during times of higher stress. High-performance games can be extremely taxing. As can rendering a video with a timeline containing multiple 4K clips.
\nPower supply issues are tough because in most cases another power supply is required to figure out if that\u2019s the issue. If you\u2019re still having issues at this point, check your PC for any leaks or bulging capacitors. Do the same on the video card. Make sure the cables are still seated. These steps will ensure that your CPU is not the issue and, more importantly, tell you if your power supply is failing at max load.
\nWe hope this helped! May your PCs always POST and never turn off (unless you want them to).
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\n0:00 Intro
\n1:08 Symptoms
\n1:28 Causes
\n3:09 PSU
\n4:10 Outro<\/p>\n","protected":false},"excerpt":{"rendered":"