Overclock no longer working

z0mbi3

z0mbi3

z0mbi3

Soldato
Joined
9 May 2005
Posts
7,400
Location
Berkshire
Ok first off here are my specs, they are the same as in my sig except for the graphics card and the overclock on the e6300 is now fubar:

E6300 @ 3ghz /w 1.25v | 2x2gb Patriot ram | Powercolor 4670
X-Fi Fatality | Gigabyte P35-DS3R | Antec TruePower Trio 650

My 3870 died last week, I replaced it with with a 4670 which is nice and small and does the job for me. The weird thing is that since the 3870 died the overclock on my CPU no longer works.

I had to re-apply the overclock as the bios had managed to reset itself, understandably. The motherboard had actually remembered the settings so I just had to set a few options back to manual. Now all I've ever had to do is set the fsb (429 x 7), change the memory divider to 1:2. Aside from these it never needed any other options changing.

Now when I re-apply the old overclock it posts and gets to the memory counting bit, restarts and resets the clocks back to stock.

Now the weirder thing is that I actually managed to get the overclock to stick last night by bumping the memory voltage by 0.3v. The weird is that that exact same bios configuration is no longer working this morning.
Thing is I don't think this is memory related as I tried reducing the overclock on the CPU to keep the memory at stock speeds and it's behaving in exactly the same way. I've also tried bumping the cpu voltage and that's not making any difference.

I'm really at a loss as to what's going on here. If I leave everything at stock it works fine. Does anyone have any ideas?
 
Last edited:
I had the same issue when i moved to a Leadtek GTX 260 recently.

The PC would work fine @ 4ghz with an old 7800gt fitted and also worked fine with a 4850. However, as soon as the GTX was installed the PC would only post with either a very mild clock or stock settings. :mad:

As it was the Leadtek turned out to have terrible cap whine (possibly related???) so was returned. The Gainward card i replaced it with (should be an identical design) allowed me to clock up to 4ghz as before which i found very strange. :confused:

could have course be something else in your case but it might be worth considering that it could be the GPU causing issues... though i wouldn't know exactly how, sorry. :(

gt
 
I hope it's not that as I can't be doing with the hassle of getting the card replaced.

I didn't get round to trying a manual bios reset last night, know it's probably the first thing I should have done but I'll go home at lunch and give it a try.
 
I had a very similar problem with my old P35-DS3L when changing from a 9600GT to an 8800GT. It would post with the overclock but as soon as it got into windows, it was at stock. :confused:

I manually reset the bios on the motherboard and had no problems afterwards. Although slightly different to your problem, the manual reset should do the trick.
 
I've made sure the PCIE frequency was set manually to 100 pretty much every time.

Well I managed to get it working after a bios reset and some jiggery pokery, but as soon as I shutdown the machine and powered back up it was acting up again.

Basically if I use any frequency higher than stock, with the odd exception, it just rests when it posts and reverts to stock settings.

I'm rapidly running out of ideas here. Next step might be to flash the bios :(
 
Have you updated the BIOS at all prior to this happening? I had a similar things as a result of that and was easily sorted. If that is not the cae I would advise clearing the CMOS and starting again
 
I'm sure the F9 bios was a right pain in the arse for resetting oc's when in windows. I remember my mate flashing back to F8 when he tried the F9 beta.
 
I've already tried clearing the CMOS. Also I'm on F8.

That said I've just had a look and they're up to F12e at the moment. Could be worth a go I suppose.
 
A quick update; I've prepared a bootable USB stick with the f13c beta bios to try when I pop home at lunch. Fingers crossed.
 
Wiggins said:
You must have the 2.1 version of the board.

Good luck :)
Click to expand...

Yeah I do and thanks. I was 99.999% sure I had the 2.1 revision but spent ages trawling over pictures of the board last night to be sure :D

edit: Good job I double checked, I'd downloaded the wrong bios originally :eek:
 
Last edited:
Bios flashed fine, but I'm still having the exact same problem. I've done a bit more fiddling and found that if I turn cpu fsb setting to manual but leave it at the stock speed of 266 it still crashes during the memory check just after post. How the hell does that work?!

edit:

Found this thread and after doing some reading they seem to suggest unplugging it from the mains and shorting the bios jumper for a good 10 minutes. I'll give this a go tonight.
 
Last edited:
Woohoo. Took the mains lead out and stuck a jumper on the cmos reset pins for 10 minutes and it's all working again :D

First time I've ever had to do it for that long. Really happy now :)
 
z0mbi3 said:
Woohoo. Took the mains lead out and stuck a jumper on the cmos reset pins for 10 minutes and it's all working again :D

First time I've ever had to do it for that long. Really happy now :)
Click to expand...

Always the simple things huh? :D

Glad you got it sorted. I must make a note of that in case mine goes boobies up anytime.
 
I'm going to have to bump this one guys. I'm no closer to finding a solution.

When I get the OC to stick it works fine, but as soon as I leave the machine powered off for awhile it resets at the memory check and clears the cpu oc. The memory is definitely fine though :(
 
z0mbi3 said:
I'm going to have to bump this one guys. I'm no closer to finding a solution.

When I get the OC to stick it works fine, but as soon as I leave the machine powered off for awhile it resets at the memory check and clears the cpu oc. The memory is definitely fine though :(
Click to expand...

Have you actually ran memtest?

Was having serious problems with my noob of a overclock last night and turns out the memory was fubar but would still load on occasions.
 
No it's definitely not the memory. There's nothing wrong with my settings either.

This is the weird thing though, if I put the old 3870 back in and load the oc then it remembers it fine and works. If I then put the 4670 back in it'll still work, but if I leave the machine off over night and power back on it will post, power off at the memory check then power back on with the OC gone.

Just to clarify again, this will happen with absolutely no OC. If I just flip clock control to manual but put in the stock FSB then it will still fail as described. Even if I underclock it's behaving the same way.

The only difference between these two cards is the absences of a pci-e power connector on the 4670.

I'm really stumped :confused:
 
You must log in or register to reply here.
Back
Top Bottom