Gigabyte GA-MA770T-UD3P & freeze

[TrizoLakai]

Hello,

I have some problems with my mother card (GA-MA770T-UD3P).
I've already read this topic: http://www.tomshardware.co.uk/forum/page-256529_12_0.html

When I play to a game my PC freezes after ~15minutes.
I try to increase Voltage of DRAM (2V), VCore (+0.100) and PCIE (+0.100) but pc freezes too.
I try to increase by one the PCIE Frequency (100 to 101)
I try to plug only one DDR3 => pc freezes too.


My configuration is:
- G.Skill Kit Extreme3 4 x 1 Go PC12800 Trident Series (8-8-8-21 and 1.65V)
- AMD Phenom™ II X4 810
- OCZ StealthXStream - 500W
- 9500GT

Thanks to help me

 

[TrizoLakai]

I want to add informations:

I've already try memtest86+: it's ok.
I don't have DES installed.
I try all the OCCT 3.0.1 tests : all are ok but GPU: OCCT test. (It means that my computer freezes before the end of the test)
I have windows XP SP3 PRO and all my drivers are up to date.

Thanks again.