ga-h55m-s2 restart / shutdown problem

[Sublios_Pixelus]

Have got a really annoying problem with this board.

Basically you power it on and it takes ages to actually post after that it will load windows or what ever fine and seems to run fine, but here are the issues

it will not power down, either with the power button or from software, not from windows, ubuntu or qflash etc it just hangs and does nothing else, although usb devices do power down. (holding power button for 4 secs does work btw)

now the reset button or indeed a software reset does not work right, ie memtest you press escape and it should instantly reboot but nope you get a black screen and then after ages it will finally reboot

another reset issue is that it always powers off when it does finally reset

I've tried flashing the bios with several different versions, removing bios battery, different psu, different mem, reseated the cpu and changed every bios setting there is all to no avail so far, only unchanged hardware is the cpu a G6950 that came out of a working pc.

[Dark Mantis]

Hi

I think you need to start from scratch and take the parts out of the case.

Remove the motherboard from the case and test it on the workbench.

Make sure that you observe anti-static precautions.

Lay some cardboard or use the motherboard box that is non-conductive on the worktop and remove the motherboard/CPU/heatsink/fan/buzzer/one stick of memory and PSU from the case and put it on the cardboard. Add the keyboard and now I know you haven't got any graphics but try and boot. The system should try and then fail emitting a series of beeps. Please post what sounds it makes.

[Sublios_Pixelus]

Hi,

Have tried it outside of the case and have tried with a pci-e graphics card instead of onboard but is still the same have also tried with ps2 keyboard and indeed no keyboard. Only beeps it gives is with the memory removed (continuous short beeps) and that according to the manual is power related which is odd and that's with 2 different psu's

[Dark Mantis]

Well POST is completing correctly and giving one beep for a successful boot. Or more if you have the GPU disabled etc. Therefore the motherboard/CPU is all working alright and it must be something else like the graphics card maybe. Can you try the GPU in another machine or try a different GPU in your system ?

Another thing to try is to disable all power saving settings in both Windows and the BIOS. In the BIOS that is C1E, EIST, C3, C6 etc and the sleep modes S1 etc.