GTX 470 Blank light blue screen after loading. Help!

[Gerdet]

Sometimes (every 2 days or more) from a cold boot after the greeting windows 7 32 the screen just goes a blank light blue colour with no cursor. The computer freezes and does not respond to pressing ctrl-alt-del and reset. Only if I turn off the power.No error message in the event log. In serious games, and stress tests, no problems. Please help how to fix it? What it can be? The system is clean installed only the driver

Gigabyte GTX 470
ASUS P7P55D Pro

[Dark Mantis]

Hi and welcome to the Gigabyte Forum.

Can you tell if the screen is just blank but the rest of the system continues to run or if everything is frozen?

[Gerdet]

Hi and welcome to the Gigabyte Forum.

Can you tell if the screen is just blank but the rest of the system continues to run or if everything is frozen?

system does not reboot or reset button.I think the system freezes. How else can determine that the system continues to run? add another that the system clean and installed only the driver

[Dark Mantis]

OK let's run through the normal causes of this sort of problem.

Disable the Power Saving settings in the BIOS.
Disable the floppy drive in the BIOS.
Are you overclocking anything at all?
Are you using the latest drivers for the GPU?
What PSU are you using, make/model please?

[Gerdet]

OK let's run through the normal causes of this sort of problem.

Disable the Power Saving settings in the BIOS.
Disable the floppy drive in the BIOS.
Are you overclocking anything at all?
Are you using the latest drivers for the GPU?
What PSU are you using, make/model please?

The BIOS on MB is lastest and settings is default.
I have not connected floppy drive and in the BIOS it is also not.
 No, I do not overclocked.
All lastets drivers.

XFX 850W Black Edition PSU