Hi All,
I am running out of troubleshooting options here so I am looking for suggestions.
I was using my computer the other day normally, then had it running Plex for a couple hours streaming video. Returned to my computer some time later, wiggled the mouse to wake up the monitor, clicked on Firefox (I think I could have clicked on anything with the same result) and you hear the power "click" and the computer does a HARD power-down (as if you yanked the cord from the wall) and then enters a continuous HARD power up/down loop every ~5 seconds automatically and indefinitely. If you turn if off and leave it alone for a while, sometimes it will work again for a while, sometimes it won't. If left idle, it will run indefinitely if you can get it in Windows, system recovery, or the BIOS. The trigger for the hard shutdown is always when you select or click on something, and it appears to be random.
STEPS I HAVE ALREADY TAKEN which have done nothing:
1) Replaced the SSD, and tried booting both before and after a fresh copy of W10 was installed, confirming definitively it is not the SSD nor is it a Windows issue.
2) Took it to a computer repair shop, paid them for diagnostics, to which they diagnosed it "no fault found" (the issue is intermittent and unfortunately did not occur for the tech). Ram, GPU, CPU, etc. were tested, stress tested, and no faults found.
3) My power supply is a 4-month-old EVGA Supernova 650 P2. Turning off "ECO" mode on the PSU actually gave me 2-3 full days of usage before the issue repeated itself. It's possible the brand new PSU is a lemon so I am going to swap it out today just in case. I've checked all connections/cables etc.
4) It is plugged into a high-end Cyberpower pure sine wave Battery Backup unit, and no other devices plugged into it have issues, so it should be receiving good power. I have tried different outlets, and straight into the wall with no success.
5) Turned my mild overclock (air) off, reset the bios, and updated all hardware firmware
6) I have run all kinds of hardware monitoring, and temperatures all look good. It's in a cold basement too where ambient temperature is usually around 16C.
7) I have tried using a different power cable to the PSU.
At this point I think it can be only one of 3 things:
1) My brand new power supply is a lemon, and something is somehow triggering it's protection circuits or similar. Swapping it out today to see. The fact that turning off ECO mode let me run for the longest time yet, and the nature of the hard power downs has me suspicious that the PSU's protection circuitry is somehow being tripped.
2) My mobo is defective (ASUS P8Z77-V DELUXE)
3) Some sort of weird, new, environmental or power issue is occurring
Anyone have any other suggestions? I thought I had fixed it when I got a whole weekend out of it after turning off "ECO" mode on the power supply, but then it happened again yesterday under the EXACT circumstances as the original issue - computer is idle for a few hours, computer is woken up, and I clicked on Firefox (or any other application) and BOOM it hard powers-down the instant it is asked to do anything at all other than sit idle in windows. Curiously, it will sit idle in windows indefinitely had I not asked it to do something. It never powers down from a powered-on, idle state - only when something is asked of it.
After it's latest failure, Windows did some sort of automatic recovery and reversed two days of work and program installations I did after I thought it was fixed. Super annoying.
What makes this so frustrating is the issue is intermittent and not immediately repeatable depending on certain random factors. Every time I think it might be fixed, it happens again. Thanks in advance!
I am running out of troubleshooting options here so I am looking for suggestions.
I was using my computer the other day normally, then had it running Plex for a couple hours streaming video. Returned to my computer some time later, wiggled the mouse to wake up the monitor, clicked on Firefox (I think I could have clicked on anything with the same result) and you hear the power "click" and the computer does a HARD power-down (as if you yanked the cord from the wall) and then enters a continuous HARD power up/down loop every ~5 seconds automatically and indefinitely. If you turn if off and leave it alone for a while, sometimes it will work again for a while, sometimes it won't. If left idle, it will run indefinitely if you can get it in Windows, system recovery, or the BIOS. The trigger for the hard shutdown is always when you select or click on something, and it appears to be random.
STEPS I HAVE ALREADY TAKEN which have done nothing:
1) Replaced the SSD, and tried booting both before and after a fresh copy of W10 was installed, confirming definitively it is not the SSD nor is it a Windows issue.
2) Took it to a computer repair shop, paid them for diagnostics, to which they diagnosed it "no fault found" (the issue is intermittent and unfortunately did not occur for the tech). Ram, GPU, CPU, etc. were tested, stress tested, and no faults found.
3) My power supply is a 4-month-old EVGA Supernova 650 P2. Turning off "ECO" mode on the PSU actually gave me 2-3 full days of usage before the issue repeated itself. It's possible the brand new PSU is a lemon so I am going to swap it out today just in case. I've checked all connections/cables etc.
4) It is plugged into a high-end Cyberpower pure sine wave Battery Backup unit, and no other devices plugged into it have issues, so it should be receiving good power. I have tried different outlets, and straight into the wall with no success.
5) Turned my mild overclock (air) off, reset the bios, and updated all hardware firmware
6) I have run all kinds of hardware monitoring, and temperatures all look good. It's in a cold basement too where ambient temperature is usually around 16C.
7) I have tried using a different power cable to the PSU.
At this point I think it can be only one of 3 things:
1) My brand new power supply is a lemon, and something is somehow triggering it's protection circuits or similar. Swapping it out today to see. The fact that turning off ECO mode let me run for the longest time yet, and the nature of the hard power downs has me suspicious that the PSU's protection circuitry is somehow being tripped.
2) My mobo is defective (ASUS P8Z77-V DELUXE)
3) Some sort of weird, new, environmental or power issue is occurring
Anyone have any other suggestions? I thought I had fixed it when I got a whole weekend out of it after turning off "ECO" mode on the power supply, but then it happened again yesterday under the EXACT circumstances as the original issue - computer is idle for a few hours, computer is woken up, and I clicked on Firefox (or any other application) and BOOM it hard powers-down the instant it is asked to do anything at all other than sit idle in windows. Curiously, it will sit idle in windows indefinitely had I not asked it to do something. It never powers down from a powered-on, idle state - only when something is asked of it.
After it's latest failure, Windows did some sort of automatic recovery and reversed two days of work and program installations I did after I thought it was fixed. Super annoying.
What makes this so frustrating is the issue is intermittent and not immediately repeatable depending on certain random factors. Every time I think it might be fixed, it happens again. Thanks in advance!
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