Computer Had Bad Motherboard Started Up Again
v fixes when your PC randomly won't turn on
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Nosotros already covered some of the mutual reasons why a newly assembled PC might not kick, such as plugging in the front end panel connectors (and specifically the ability switch) incorrectly and missing motherboard standoffs. If you're having an issue with a new build, yous should definitely bank check that out. However, it'due south not always brand new PCs that tin exist problematic.
1 of the worst feelings is when a formerly reliable PC all of a sudden stops turning on. We take for granted that when we power down our arrangement, it will dutifully fire dorsum up the next time nosotros want to utilise information technology. Even if you leave your PC running 24/7, y'all might one day find that information technology'southward turned off and won't come back to life. Either way, information technology'southward a gut punch, but not necessarily the end of the globe.
There are various reasons why an old PC will suddenly not plow on. Tripping over the power cord is one of them, just unless y'all sleepwalk, you'll know if that'south the instance. So, we'll skip that one and spring correct into five reasons why your sometime PC will no longer kicking.
i. Check the surge protector or UPS
Is your PC plugged into a surge protector or uninterruptible power supply (UPS), otherwise known every bit a bombardment backup? While this sounds similar the equivalent of request 'Is information technology plugged in?' it's actually very easy to overlook, especially if you have pets or kids. Even though the surge protector is plugged into the wall, if the power switched gets accidentally bumped to the off position, your PC is non going to boot no affair how many parts you supersede. It'south best to cheque this first earlier you start ripping hardware (or your pilus) out.
The same affair applies after a power outage or lightning storm. Some power strips with built-in surge protection have a reset switch that needs to be pressed after absorbing a power surge. Yous can test if your surge protector or bombardment backup is the culprit piece of cake plenty—but plug a known working electronic into one of the sockets, similar a lamp, and see if turns on.
2. Change the CMOS battery
Every motherboard has a CMOS (complementary metal-oxide semiconductor) battery. This is normally a little CR 2032 3V coin cell battery, and is sometimes found sandwiched between PCI Express slots, though it can be merely almost anywhere (refer to your motherboard manual if you lot can't find information technology). This is what provides backup ability to the CMOS chip and so that it tin think the engagement, time, and other settings when the PC is turned off.
In theory, a expressionless CMOS battery shouldn't forestall your PC from booting, it should mainly just mess with the time. In do, we've seen information technology exist the culprit. CMOS batteries typically last a long time, but if you have an older PC that is being stubborn, information technology only costs a few bucks to buy a new one and swap information technology out with the potentially expressionless one. After yous do this, and assuming information technology solves the problem, hop into the BIOS to make sure none of the settings take been changed.
3. Examination the RAM (if you can)
One of the signs that your RAM is to blame for a non-booting PC is i or more seemingly random blue screen of decease (BSOD) errors that preempted your arrangement'due south permanently powered off state. If y'all have admission to a spare PC with compatible DIMM slots, you lot can test your RAM using Memtest86+, an older but pop diagnostic. While time consuming, information technology'southward all-time to test one module at a time, as it'southward unlikely (though not impossible) that multiple modules of a sudden went bad.
Another option, and ane that is quicker, is to try booting your organisation with only a single stick of RAM. This simply applies if you're using ii more retention modules as office of a dual-channel or quad-channel kit. If one of the sticks is bad, attempting to boot with one module at a time will narrow downwardly the culprit by process of emptying.
4. Lower the heat
It's more difficult these days to really fry a processor. Typically a modern system will shut itself off earlier that happens, and if your PC turns on for a second or ii before losing power again, it could indicate that your CPU's temp is ascension too high and too chop-chop.
You probably don't need to reseat your CPU libation, non unless your overexcited labrador bumped into your instance and jarred things loose. However, depending on the age of your PC, information technology's possible the thermal paste between your libation and the CPU'southward integrated heatspreader (IHS) could have stale upward. Cleaning off the quondam, crusty paste and applying brand new goo can significantly reduce temps, and potentially revive a non-booting PC.
Don't stop there. While yous're at it, now is a good time to blast out any dust bunnies that might accept taken residence in your PC. A few blasts from a can of compressed air volition do the trick. This is especially important on fans and heatsinks. Dust that builds on either tin can human activity equally a shield against proper airflow.
5. Punch back the overclock
Overclocking is a funny thing. Everything can seem fine one solar day, and then the side by side 24-hour interval you're right back to retesting settings to find a stable OC. An overclock that is too ambitious tin stop your PC expressionless in its tracks. This is true fifty-fifty if everything seemingly worked fine before.
If y'all're able to become into the BIOS, go in there and dial things down, or revert to stock settings to see if that does play tricks. Entering the BIOS is not e'er possible. I had an older Gigabyte motherboard that was finicky with overclocked settings and would play dead whatsoever fourth dimension I close it off. The but recourse was to clear the CMOS so that the factory settings would be reapplied. Some motherboards have a button that makes this easy, others require petty with a jumper. Consult your motherboard manual on how to exercise this on your specific mobo.
One word of circumspection: If you're running two more drives in RAID, resetting your BIOS can destroy the RAID assortment if you lot don't go back in and select RAID. The default setting is typically IDE or AHCI. Exist sure to prepare this back to RAID if that's how your boot drive is configured.
Source: https://www.pcgamer.com/5-fixes-when-your-pc-randomly-wont-turn-on/
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