E4400 won't boot with even 10 mhz oc

[roblob]

Ok so I built my computer about a week ago now. At first I was able to overclock it to 3ghz. While doing this oc I could never get my mb stable when I set the voltages manually, but worked fine when using auto. Even when I put in the exact some voltages as auto, manually it never worked. This oc had been stable running orthos.

This oc was fine about a week until yesterday it wouldn't post. So I tried to see if my same oc again might work. When that didn't work I tried to take it down a little. And as I continually when down it still wouldn't post. This got to the point where it would not post with even a 10 mhz oc over stock. Do you guys have any ideas what is wrong?

The voltage was 1.36 and under load it was normally around 60 C when the oc worked. My motherboard is a GA-P35-DS3L. This was all on stock cooling.

 

[myocardia]

Welcome to anandtech. What speed do you have your RAM running at, when the cpu's at stock speed. I'm guessing that it isn't running @ 266 Mhz/533 DDR. If you do have the RAM running at the lowest possible speed, then it sounds like one of your sticks has gone bad.

 

[roblob]

I have it running at 400/800DDR at stock. Should I run memtest anyway just to see?

Thanks for the quick response.

 

[JustaGeek]

It is your memory, IMO.

Use a memory divider to make sure that your memory is running below 800MHz.

Relax the timings (example: from 4-4-4-12 TO 5-5-5-15, always 2T command rate) and increase the memory voltage, one notch above the specs.

Good luck!

BTW, remember, when you increase the FSB, you increase the speed of Memory Bus as well. Set your divider to 1:1 for the time being.

 

[roblob]

I'm starting to think it is the motherboard. I relaxed the memory timings and put the divider at 1:1. Then I tried just a slight oc again. no post. Then I tried under clocking by about 10 mhz. no post. Then I tried just enabling overclocking, but not actually changing anything. no post again. I also ran memtest and got no errors.

 

[JustaGeek]

Reset the CMOS before you attempt anything else.

Then update the BIOS, if you haven't done so. Use AWDFLASH in DOS (with bootable floppy or bootable CD) with the pertinent switches enabled.

1. Install the BIOS.
2. Shut down the computer.
3. Reset the CMOS.
4. Turn on the computer, enter BIOS, Load setup defaults, exit and save.
5. (on reboot) Enter the BIOS, do all the manual settings, exit and save.

Hope it works!

Wasn't there an issue with one of the Gigabyte BIOS versions that people complained about?

Perhaps someone with the same MB can give you an advise about the best BIOS versions for your setup.

Good luck!