Strange MoBo Behaviour

[DarthRevan]

Hey guys, my MoBo is having as very strange behaviour. Check my rig first:

Core i7 920 | Gigabyte X58-UD5 | OCZ Platinum 3x2GB DDR3 1600Mhz | GeForce BFG GTX280 | Patriot Warp V2 SSD 32GB for OS | WD VelociRaptor 300GB GLFS | Sound Blaster X-Fi Titanium Fatal1ty Pro | Corsair HX1000 | CM-690 W/ Window + 7 Fans CM 90CFM

The problem is that by defaul my RAM is set to 1066MHz (mem divider at 8), so I go to the BIOS and set it to 12, so it goes to 1600MHz (default BCLK 133). So everything is on it´s factory-settings, and it works normally. The problem comes after shutting down the PC, if I turn it off and don´t turn the PSU off too my boot fails the next time I turn it on and the mems go to 1066MHz again! But if I turn off the PSU power and just turn it on right before turning the computer on, everything works normally. Isn´t this strange?

 

[DAPUNISHER]

Which bios are you running? I've had similar problems with various boards, and sometimes it is resolved by flashing a newer bios.

 

[DarthRevan]

F6 Bios. I´ll be updating to F8x Soon, but it´s very strange, the setting works when the PSU is shut down but it doesn´t work when i let it with power (the PC is off, but as the PSU is on the CMOS light in the board remains blue).

 

[lopri]

Yeah those kind of issues are extremely hard to shoot down from end-users. I'd suggest trying the latest BIOS as well.

 

[DarthRevan]

Is there any chance it could be a bad CMOS battery?

 

[DarthRevan]

So..... any more opinions?