gxr Posted November 7, 2013 Share Posted November 7, 2013 Hi all, Been reading these forums since I built my system back in January but have never bothered to register until now. For the past couple months I've been having an issue where if I shut down my PC completely, it won't turn back on. The power LED on the motherboard stays lit, but I don't get any fans, lights, POST beeps...nothing. If I restart either through windows or through the reset switch it's fine. Not the case switch - tried shorting the pins on the motherboard to no avail. My motherboard has a feature called USB BIOS flashback - even when the system is not on if you plug a USB drive in with the BIOS file on it, and push a physical button next to the USB ports it will flash the BIOS to the version found on the USB drive. Funny thing is if I push that button with no USB drive connected, after it "fails" to flash the BIOS I can turn the PC on just fine. This led me to believe the motherboard was causing the issue. ASUS RMA'd the board and I replaced it, but still having the same issue. Some googling around and I've come across some posts in various places suggesting it might be an issue with the PSU. I know next to nothing about how PSUs themselves work, so I'm not sure. I have an AX750 that I bought back in Jan-Feb of this year when I built the system and don't have any other issues aside from this. If anyone has any insight into this, it'd be greatly appreciated. Link to comment Share on other sites More sharing options...
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