Hello,
So my PC was running fine for 1-2 years until today. I still used it yesterday night, and the problem presented just today.
I better tell the story from the start. So starting a few months ago, I noticed my PC won't power on unless I turned off the UPS, wait a few seconds, then turn it back on. When I turned the UPS back on, the LED in the casing's power button light up (PC still off), and then it turned on normally after I pressed the button. Since it's only a small hassle (turn off UPS, turn back on), I ignored this 'phenomena', and did the UPS ritual everytime I want to turn on my PC. It wasn't originally like that before.
Well, today, the problem started. I did the usual, power off UPS, power back on, and the power button LED lit. Pressed the button repeatedly, and after a few tries, it turned on and loaded windows. After a few moment, it suddenly shut off, like what happened in a power failure. Did the UPS ritual, and pressed the button repeatedly again, and it booted up again. I used it for a few hours, even did some gaming, and everything was normal, so I thought it was just a fluke. Then turned it off for a few hours, and tried to turn it on again. This time it wouldn't light up, no matter what I did.
- Tried bypassing the UPS (plugging directly to power source), nothing
- The small green LED on the MB lit like usual
- Tried shorting the green-black cables on the 24-pin, and the fans started spinning (of course no booting)
- Tried unplugging the cables for power switch on MB, and shorted the power jumpers with a screwdriver, nothing
- Last time it turned on succesfully, I smelt around the PSU outtake fan and around the MB (in general), to see if there were any burnt smell, and there were none.
- I don't have a spare PSU to test swapping the PSU
So any ideas as to what the problem is? I'm guessing it's the MB (maybe bad caps?), but I'd very much like the hear opinions before I go and buy a new MB
Thank you
So my PC was running fine for 1-2 years until today. I still used it yesterday night, and the problem presented just today.
I better tell the story from the start. So starting a few months ago, I noticed my PC won't power on unless I turned off the UPS, wait a few seconds, then turn it back on. When I turned the UPS back on, the LED in the casing's power button light up (PC still off), and then it turned on normally after I pressed the button. Since it's only a small hassle (turn off UPS, turn back on), I ignored this 'phenomena', and did the UPS ritual everytime I want to turn on my PC. It wasn't originally like that before.
Well, today, the problem started. I did the usual, power off UPS, power back on, and the power button LED lit. Pressed the button repeatedly, and after a few tries, it turned on and loaded windows. After a few moment, it suddenly shut off, like what happened in a power failure. Did the UPS ritual, and pressed the button repeatedly again, and it booted up again. I used it for a few hours, even did some gaming, and everything was normal, so I thought it was just a fluke. Then turned it off for a few hours, and tried to turn it on again. This time it wouldn't light up, no matter what I did.
- Tried bypassing the UPS (plugging directly to power source), nothing
- The small green LED on the MB lit like usual
- Tried shorting the green-black cables on the 24-pin, and the fans started spinning (of course no booting)
- Tried unplugging the cables for power switch on MB, and shorted the power jumpers with a screwdriver, nothing
- Last time it turned on succesfully, I smelt around the PSU outtake fan and around the MB (in general), to see if there were any burnt smell, and there were none.
- I don't have a spare PSU to test swapping the PSU
So any ideas as to what the problem is? I'm guessing it's the MB (maybe bad caps?), but I'd very much like the hear opinions before I go and buy a new MB
Thank you
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