PC won't boot after power surge - Motherboard still receiving power

[Xplox55]

Essentially, power surge/outage last night during a storm. Power went out/on a couple times (with fan lights on my PC turning on between the surges) and then it went out for 7 hours.

Once it was out for good, I unplugged my PC and monitors from the surge protector, as the milliseconds the power comes back on, is apparently unregulated. So unplugged. Power is back on and stable, I plug things back in, the motherboard lights indicating power are on (as seen in the images) and none of the built in ASUS problem light indicators are on. However the PC won't boot at all, nothing happens. No fans, no blips, no flashes, nothing.

Tried both front panel power button and the physical power button on the motherboard itself. Surge protector is still working fine (monitors and such turn on as normal) and I plugged my PC into the wall just to be sure.

Moved around RAM (normally 4, been swapping between them just incase there was a problem with one) and that's about all the time I had before having to go to work and make this post. Any ideas or suggestions would be much appreciated.

PC https://imgur.com/a/syeKg

EDIT : I forgot to mention, motherboard is an ASUS TUF Z270 Mark 1 - and the keyboard is also receiving power. Keycap lights are turning on - albeit a strange pattern I have never set or used before - but they are on.

 

[kaptainkuftic]

This happens to me after power outages, usually mine comes back if I coax it into powering on with the power switch on the PSU. I flip that off for a few seconds, back on, then try booting up. Usually comes back for me after a few on/off cycles

 

[smorizio]

also try clearing the cmos.

 

[Xplox55]

This happens to me after power outages, usually mine comes back if I coax it into powering on with the power switch on the PSU. I flip that off for a few seconds, back on, then try booting up. Usually comes back for me after a few on/off cycles

I had done that quite a few times with no success sadly, but will try a few more once I get home.

 

[Chad_40]

Essentially, power surge/outage last night during a storm. Power went out/on a couple times (with fan lights on my PC turning on between the surges) and then it went out for 7 hours.

Once it was out for good, I unplugged my PC and monitors from the surge protector, as the milliseconds the power comes back on, is apparently unregulated. So unplugged. Power is back on and stable, I plug things back in, the motherboard lights indicating power are on (as seen in the images) and none of the built in ASUS problem light indicators are on. However the PC won't boot at all, nothing happens. No fans, no blips, no flashes, nothing.

Tried both front panel power button and the physical power button on the motherboard itself. Surge protector is still working fine (monitors and such turn on as normal) and I plugged my PC into the wall just to be sure.

Moved around RAM (normally 4, been swapping between them just incase there was a problem with one) and that's about all the time I had before having to go to work and make this post. Any ideas or suggestions would be much appreciated.

PC https://imgur.com/a/syeKg

If you have another power supply you could try that, try clearing the cmos, maybe even disassemble clean everything with some air duster, reset cpu and try it outstide of the case.

 

[Xplox55]

also try clearing the cmos.

My motherboard has a "Clear RTC RAM jumper" which states to clear the Real Time Clock RAM in CMOS - is this the same as removing the battery, or will I still need to remove the battery?

 

[Chad_40]

also try clearing the cmos.

My motherboard has a "Clear RTC RAM jumper" which states to clear the Real Time Clock RAM in CMOS - is this the same as removing the battery, or will I still need to remove the battery?

From my understanding the jumper works just as well as removing the battery, but i always like to remove the battery when possible just to be sure.

 

[Grugbug]

Unplug the PSU and remove the battery for a few minutes to clear the CMOS.

 

[Xplox55]

This happens to me after power outages, usually mine comes back if I coax it into powering on with the power switch on the PSU. I flip that off for a few seconds, back on, then try booting up. Usually comes back for me after a few on/off cycles

Lo and behold this was the solution apparently lol. I had indeed done this earlier today, and trying it now it would start to boot and then just stop. A few more cycles, and we're up and running.

Anybody know if there is something faulty causing this, or just a strange quirk of some homebuilt rigs?

 

[kaptainkuftic]

This happens to me after power outages, usually mine comes back if I coax it into powering on with the power switch on the PSU. I flip that off for a few seconds, back on, then try booting up. Usually comes back for me after a few on/off cycles

Lo and behold this was the solution apparently lol. I had indeed done this earlier today, and trying it now it would start to boot and then just stop. A few more cycles, and we're up and running.

Anybody know if there is something faulty causing this, or just a strange quirk of some homebuilt rigs?

I KNEW IT!

Lol, I'm not sure why it tends to work, but at least I know I'm not crazy

 

[bikemannc]

3rd time doing this CMOS dance, 1st 24 hrs, then 6 hrs , 3rd new battery, maybe it's the 3rd time..ckg soon..Also will try your in off sequence as am desperately in off any solution..Mobo + CPU+ PSU, all replaced twice to 3x (could)+(2x Mobo)+ (2x PSU).