My DS3 wont overclock anymore!

[foz]

I have had my DS3 OCed to 2.8ghz for the last 2 months until a couple days ago I turned tried to turn it on and it rebooted back to the default 1.8ghz. I have tried to reoverclock it(also with lower OCs), but it gets to the POST screen then reboots back to default clocks. I have all the voltages set to wusy's guide. I ran memtest-it passes. I updated the bios from f9 to f12(after the problem started). The temps are all ok-idle~25C.~. The system will boot fine at the stock settings. I have had no hardware changes in the last month. I tried setting the pci express at 102mhz as recommended by a few post. Do you guys have any other ideas?

 

[Daba]

I've had a similar problem with my GB P35-DS4. You probably left a USB drive connected and "Legacy USB device detect" [Enabled] in your BIOS.
Just set it as [Disabled].

Daba

 

[foz]

Thanks for the reply, I also posted this question in the CPU section and some one gave me advice to unplug USB drives as a solution and it worked but I didnt know why- now I know.Thanks, and welcome to the forum!

 

[Daba]

Thanks.
Unfortunately, this morning, my BIOS is defaulted again!!??
I did mess around with the voltages so may be BIOS recovery is sensing something... I will investigate this further and post the results (not before 20.7.2007).
MB is GA-P35-DS4 rev 1.0 with F4 BIOS
CPU e6600@3GHz
RAM SuperTalent PC-6400 4-4-3-8

I did noticed one wierd thing. When my CPU is not OC-ed and System voltages are on Auto, CPU-Z and EasyTune5 says my CPU voltage is 1,44V! 8O

 

[Orbixx]

Your system voltage probably varies due to the board's default settings to raise and lower your CPU clock depending upon the CPU's demands. EIST I think it's called.

You might also have that feature enabled that overclocks automatically dependant upon hardware demands.

Monitor the clock speed with CPU-Z.