Very Strange Shut Down Issue!

Hyper

Hyper

Hyper

Soldato
Joined
2 Jul 2005
Posts
3,549
Location
Newcastle
Hi all,

Just built a computer for my mate tonight, here are the specs:

Asus P5KPL-AM Motherboard
Intel Pentium E6300 CPU
Crucial Ballistix 2x1gb RAM
ATI HD 3450 GPU

I went ahead and installed Windows 7 and all was going well,

Updated all drivers etc and thought all was done so powered it down,

After 20mins or so I decided to power it back on to give it one more go but to my disbelief it seemed dead, after 3 more pushes of the power button it finally powered on but all my bios settings were reset as if I had removed the cmos battery.

I put all the settings back, booted into windows and shutdown the same as before, surprise surprise when exactly the same thing happend when I attempted to turn the thing back on!

I am totally stumped, tried different jumper cmos reset settings, even tried just taking the jumper out, tried 1gb of RAM and no joy with both sticks.

All connections seem fine and the system is healthy once running but when shut down it doesnt seem to want to power back on!

Anyone else got anymore suggestions as to what I could try or has anyone come across this one before because I know I certainly havent...

Thanks, Sam
 
Sounds like a motherboard-only issue, because the BIOS settings shouldn't be resetting themselves even if you disconnect the PSU and take every component out.

I've noticed with my board however, that if I set my clocks wrong (so that it becomes unstable), the PC will turn itself off right after pressing the power button, and if I turn it on again I get a screen saying "The previous OC settings failed, do you want to restore default y/n", so it might just be your mobo recovering from what it thinks is a faulty OC.

Systems not liking cold boots is not entirely uncommon.

Are you overclocking? If so, try changing some motherboard settings but keeping the speeds at stock, and seeing if it still resets itself.
 
Everything is running at stock at the moment, i didnt get a chance to even look at overclocking. Only thing i have tried is upping the voltage on the ram as i know crucial takes a bit more power but still no joy. Could it be a faulty cmos battery or would this not matter since its still plugged into the mains?
 
All sorted now,

My mate bought the motherboard used and after reading the manual a few times I realised for some strange reason it had a jumper missing.

It was missing from the area you use to clear the cmos, but when running normally you still need a jumper in "normal" position otherwise your computer wont boot properly.

After digging around through old hardware I found a jumper on a old hard drive, put that into the correct normal position on the motherboard and all was well.

No idea how the previous person was using this motherboard mind!
 
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