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Hello all,

I've re-installed windows 8 64 and the pc as a weird behavior now. Maybe some program or driver I installed is causing it. When I press shutdown the pc starts to shut but then for 1 second it looks like its powering up again, and then really shuts down.
The sound looks like fans spinning (maybe the GPU or CPU I don't now).

Anyone care to help?

Thanks

Make sure you have the latest Bios maybe?

vargis14 wrote:

Make sure you have the latest Bios maybe?

Yes I have it. Before the re install of windows I had the same configuration.

are you using display port? i have an issue like this that seems to be caused by power over the DP line to my GPU. Wouldn't explain the change at the time of OS change though, of course...

hexr wrote:

are you using display port? i have an issue like this that seems to be caused by power over the DP line to my GPU. Wouldn't explain the change at the time of OS change though, of course...

Using HDMI. Yes, I doesn't explain it. Maybe some new drivers maybe?

Anyone?

Is the only symptom that makes you think that the PC is trying to start up again the fact that the fans spin up? Does everything on the screen look normal?

kumori wrote:

Is the only symptom that makes you think that the PC is trying to start up again the fact that the fans spin up? Does everything on the screen look normal?

Screen is normal, black as it is supposed to be when powering off...

How many fans spin back up? Do they reverse direction when they come on the 2nd time just before full power-down?

DPete27 wrote:

How many fans spin back up? Do they reverse direction when they come on the 2nd time just before full power-down?

The ones I ear are probably from the GPU. I can't tell if they are spinning in reverse...

Sounds like the driver is no longer controlling the gpu fan.

My older Geforce 560 GTX would do the same on post or in the bios until windows booted up and loaded the driver then you could hear the fan quite down. On shutdown you would hear the fan ramp up to fixed speed until the power supply switched off.

Built in protection within the graphic card bios for when no operating system/driver is running to control fan speed.

biffzinker wrote:

Sounds like the driver is no longer controlling the gpu fan.

My older Geforce 560 GTX would do the same on post or in the bios until windows booted up and loaded the driver then you could hear the fan quite down. On shutdown you would hear the fan ramp up to fixed speed until the power supply switched off.

Built in protection within the graphic card bios for when no operating system/driver is running to control fan speed.

Could be the new version of Nvidia drivers then?

Jon1984 wrote:

The ones I ear are probably from the GPU

Opening the case and LOOK INSIDE generally helps. How do you expect to solve a problem if you don't know the culprit?

If you want to explore the graphics driver as a possibility, you can easily go to Nvidia's site and install the previous driver. If the fan problem goes away, the answer is yes.

DPete27 wrote:

Jon1984 wrote:

The ones I ear are probably from the GPU

Opening the case and LOOK INSIDE generally helps. How do you expect to solve a problem if you don't know the culprit?

If you want to explore the graphics driver as a possibility, you can easily go to Nvidia's site and install the previous driver. If the fan problem goes away, the answer is yes.

Yes generally helps. Although as all fans are spinning its difficult to be sure its the GPU. But thanks anyway i'll try the drivers.

It was the beta Bios I was using. Changed the board (bricked with a new bios) to an ASUS and no problems so far.