random freezes after bios update

[Denes Isti]

I have the following setup:
Motherboard: Gigabyte GA-EP45T-UD3LR
Processor: Intel Core2 Duo E8400 3.00GHz Wolfdale Box
Memory: Kingston ValueRAM 4GB DDR3 1333MHz CL9 DualKit
VideoCard: NVidia GeForce GTX 560

For a while now I was running the motherboard with Bios Update F6. I'm thinking on buying some extra RAM, and read that it is advisable to update the bios before installing extra ram. So I've updated to f12e. Now I have random freezes (must reboot afterwards), mostly in games, but also while running prime95. With bios f6, every hardware test gives ok. Ran memtest86 for hours and was no memory errors.

I think I need to set some bios values, but which? I have loaded the Optimized Default values and only set on the Integrated Peripherals page to use AHCI for the Harddisk.

Any ideas?

[dmdilks]

When you did the bios update did you clear the cmos and pull the battery for about 10 mins.

Or did you do it through windows and just reboot and set it to Optimized Default.

If you did it through windows I would clear the cmos and pull the battery.

Then do the Optimized Default reboot and than setup the bios.

Plus to be on the safe side pull the plug from the PSU when you are clearing the cmos.

[Denes Isti]

I updated the bios through Q-Flash, not windows. Although I didn't clear the cmos or pull the battery. Why would I need that?