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Windows shuts down, fans and lights remain on.

I

Insomniator

Diamond Member
Hello I just updated the BIOS of my Asus P8P67 motherboard and now when I shut the computer down Windows will close and the screens will go black. The fans and lights however remain on. If I hold the power button down they will go off and windows boots up like nothing went wrong.

Any ideas? Is this a motherboard issue or possibly something with my case? I've had issues in the past with the computer not powering on whenever it was connected to the USB ports on my retarded case (had to send back the whole panel for an RMA but even the returned one is finicky).
 
Well I just got home from work and my computer flashed lights then shut off and now won't turn on...

The PSU is a corsair 650 that is fairly New from an rma... I've had weird power issues like this the entire time with this build and the more I think about it the.more I think this mobo is at fault...
 
Sounds like a motherboard issue. It could also be PSU, but given the other symptoms and history I think that motherboard is more likely. Maybe the case USB header shorted something out?
 
Ok this is driving me crazy. Came home today (gone all weekend), turned on computer - lights flashed for a second and then nothing. Turn PSU off and back on - lights turn on for ~5-10 seconds and then shuts off. WITHOUT ME TOUCHING ANYTHING it tries again 2-3 times. I see only 1 fan going, none of the CPU fans, not the GPU fan.

After a few more tries I turn it on and hear a 'pop' like a capacitor style pop... but i don't see or smell anything.

So now if plug in a cheap old 8400GS I get video and everything seems normal. If I plug in my GTX 470 I get no video and the computer starts/restarts like before.

So... did my 470 die/was dying and this caused the problem? Did the PCI E lines from my PSU fry (if that makes sense)? If I plug in a 9600GSO (requires 1 PCI E) I get no video either. That suggests a PSU problem... but I don't know anymore.

When I heard something pop I was hoping it would be obvious and I could just replace the part. At this rate though I'm not going to figure anything out until I basically a new entirely new computer to put together...
 
Since it works with a low power card but fails with a higher power card, I'm leaning toward PSU now. Do you have a spare, or can you try the GTX 470 in another computer?
 
I've tried a spare computer - an old dell 9100 and couldn't get video with the 9600GSO either - with the dell psu or my corsair.

I'm trying to narrow this down to one consistent problem but nothing is making sense.

I definitely can't get video from the 9600 in the first PCI slot on my asus board. It works in the second - albeit after a reboot and sitting at a black screen for a few minutes.

The GTX 470 doesn't work in either slot and isn't detected by windows at all when I have it plugged in along with the 8400. Either its dead of the PSU can't power it.

The 8400 and 6800 work in the first slot (x16). The 9600 only works in the x4 slot.

All this time the motherboard is randomly reposting, turning on then turning off etc.

I'm still leaning towards PSU - though I have evidence to suggest it might not be.

Possibly PSU AND Motherboard. Who knows what that pop was.
 
If PCI x16 slots supply more power than PCI x4 that could explain the 9600GSO only working in the X4 slot and the GTX470 not being supplied enough at all. Would also explain the low power cards working in both.

The dimension 9100 also has an x16 slot for expansion, which the 9600 didn't work in either with my corsair.
 
Ok my 470 is definitely dead. It doesn't show video on my work computer either, with a new Corsair 700w PSU from bestbuy. RMAing it now.

My asus board asks for me to set the language every time I turn the PSU off so I guess the cmos battery is dead. The reset button doesn't work. The 9600GSO will show video on one boot, and then not the next. RMAing this as well.
 
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