I recently had an issue with my psu, and having spent some time beating it with a hammer (so to speak 
) I've worked out how to cause (and sort of temporarily solve it. I wondered if anyone here could shed some light on it?
Relevant parts (profile should contain the lot):
LC11 case and accompanying 300W PSU (it's a smaller-than-ATX affair)
ASRock K7s41 motherboard
The problem:
If the PSU is unplugged from the mains (there is no main on/off switch) for "too long" (5-10+ seconds) then when it is plugged back in the PC fails to respond to the pwr button being pressed and I have to sort of jump-start it.
The Quick-fix:
If I unplug the PSU, count to 10, then put a short between the green and black wires ("paperclip trick") before plugging it back in I can get the PSU to start up okay - all the fans and suchlike turn on. The pc doesn't boot however, and if I remove the short everything shuts off and I'm back to square one. If I manage to hit the reset button at the same time as removing the short then the pc seems to manage to boot again just fine. It's lost the bios settings onece or twice, but the last time I tried it the BIOS kept it's previous settings.
Only thing I can think of that might have preceeded this was when I swapped out my gfx card and set about neatening up the cabling in my case. Everything was powered down but the psu was still plugged into the mains (good for earthing fingers before touching components imo) so when I disconnected the motherboard and subsequently started to re-connect
the ATX power connector the psu did start turning on while I was plugging it back in (I then of course unplugged the 4 pins worth of ATX pwr that had made contact.)
Is it possible this is a BIOS issue related to the battery or something that's gone wrong on the motherboard? Or have I killed something in the psu/motherboard? After performing tricks with paperclips etc it all seems to work okay (though I do have an unrelated (I think) gpu problem at the moment
) I've worked out how to cause (and sort of temporarily solve it. I wondered if anyone here could shed some light on it?Relevant parts (profile should contain the lot):
LC11 case and accompanying 300W PSU (it's a smaller-than-ATX affair)
ASRock K7s41 motherboard
The problem:
If the PSU is unplugged from the mains (there is no main on/off switch) for "too long" (5-10+ seconds) then when it is plugged back in the PC fails to respond to the pwr button being pressed and I have to sort of jump-start it.
The Quick-fix:
If I unplug the PSU, count to 10, then put a short between the green and black wires ("paperclip trick") before plugging it back in I can get the PSU to start up okay - all the fans and suchlike turn on. The pc doesn't boot however, and if I remove the short everything shuts off and I'm back to square one. If I manage to hit the reset button at the same time as removing the short then the pc seems to manage to boot again just fine. It's lost the bios settings onece or twice, but the last time I tried it the BIOS kept it's previous settings.
Only thing I can think of that might have preceeded this was when I swapped out my gfx card and set about neatening up the cabling in my case. Everything was powered down but the psu was still plugged into the mains (good for earthing fingers before touching components imo) so when I disconnected the motherboard and subsequently started to re-connect
the ATX power connector the psu did start turning on while I was plugging it back in (I then of course unplugged the 4 pins worth of ATX pwr that had made contact.)
Is it possible this is a BIOS issue related to the battery or something that's gone wrong on the motherboard? Or have I killed something in the psu/motherboard? After performing tricks with paperclips etc it all seems to work okay (though I do have an unrelated (I think) gpu problem at the moment
