Why has my perfectly fine OC suddenly b0rked..?

Vimes

Vimes

Vimes

Soldato
Joined
15 Oct 2005
Posts
6,825
Location
Earth, for now
Hello

I have been enjoying a perfectly stable overclock, you can see my sig for details, for ages now with ZERO problems at all. Absolutely solid.

I then noticed on booting my machine that it was booting at the POST screen at

10x200=2000mhz

So off I go into the BIOS.

Regardless of what I now set, the FSB will NOT go above 200mhz :(

When I set, for example...

70537403gi8.jpg


88188376nq7.jpg


91404202px0.jpg


The voltages do reflect my 3200mhz but still on the above I get...

50207946hm9.jpg


If I select 190 FSB then I get 200mhz....!!!!

It is as though any manual FSB is being ignored from setting the Host Clock Control to enabled.

I am really at a lost here on what the problem could have been to have caused this and why I can't get anything but the CPU's default CPU to be accepted..?

In desperation have reflashed the BIOS, even though I don't like doing that.

Any ideas please...?
 
Long shot, but if the bios battery was dead it might not save your settings?

Can't think what else it could be.
 
Agree it is really strange...!!!!

I have checked that the settings are being saved - they are between each boot and when the PC is powered off. And the 220mhz is being shown, as it looks above in the BIOS. But when the POST screen comes up it shows 2000mhz 10x200 and not 10x220.

It will work from the multi - in other words I can set the 8x for the CPU and it will accept that BUT only 8x200 and not anything other than that. Then is shows on the POST scren 8x200, even if I put 8x220 in the BIOS.

I am really stumped now.

I have put all the the voltages back to normal, except for the memory +0.3 and yet still I can only get 200mhz and not 1 mhz above or below...!!!!

Any help please..?

EDIT: I have now changed the BIOS to F9, with no success and then Iwent back to F10, no change.

No settings will effect the CPU when the FSB is changed :(
 
Last edited:
Dunno if this will be any help, but on my Asus board I have this 'CPR' thing that does exactly this when an overclock fails...
Basically it retains all the settings in the BIOS but when it POSTs it configures the CPU and RAM to run at stock speeds. Usually, going back into the BIOS, saving everything and restarting the system puts them back to their overclocked values though :/
Do Gigabyte mobos have this feature?
 
Thanks for your help :)

The problem, I think, is with the BIOS / board...

If I remove the battery and leave it for at least 10 minutes (a pain as I have to remove the graphics card) I then need to remove three sticks of memory (as the voltage goes back to 1.8v) and then it will boot. I go to the BIOS info and set my 8x400, as well as the other gubbins.

Then I press F10.

Then just before it POSTS I need to switch off and put my three sticks back in and then reboot.

All is well...

BUT

If I then go back in the BIOS and make ANY change at all it will then only run at 200mhz FSB until I repeat the above procedure...!!!

I'm getting a little fed up with the Gigabyte motherboards that I have bought so far...!!! :(
 
Yes it did only happen after updating to the F10 BIOS, whether there is an association with the update, as it adds...

1. ADD new version super I/O code.

...I am not sure but I really am stuck in the above loop.
I am concerned about even switching my PC off, in case it resets back to the 200mhz FSB.
I used to remember, many years ago, flashing from the CL where you would enter flashing parameters to ensure that all areas of the existing BIOS were completely re written. That doesn’t seem to be used now, at least with the Gigabyte flashing techniques.
I wouldn’t mind but I’m usually the type of person that would only flash if I needed to resolve a problem, goodness knows why I had a fit of madness and flashed the board. However it only had F8 BIOS and I did notice that the F9 one added....

Fix CPU compatibility issues

So I assumed that would have helped for the Wolfdale CPU’s which I might get around to buying.
 
I understand matty and mine would have done the same however this one, when it is showing the above fault, will still show 8x400 and the Host Clock Control : Enabled and yet will not go 1mhz above or below 200, even though the CPU frequency within the BIOS shows - 3.20Ghz (400x8)

It does seem, in a laymans terms, as though the settings are keeping within the BIOS but where the BIOS writes those settings to is corrupt in some way and defaults to 200mhz FSB even though the rest of the settings are applied, such as CPU multiplier, voltages, memory multiplier etc etc etc...
 
mattyrigby00 said:
i have a p35-ds3l and it resets to 200 fsb if the overclock fails to POST, but it lets me change the settings again straight away =\
Click to expand...

I have the DS3R board, if the overclock fails, it tries to boot up but it will reset then it will go back to stock settings then i just change it again. I have my E2180 at 3ghz 8x375 but with 1.45V and Northbridge at .3V+ and fsb overvolt at .3V+

How did you get 3.2ghz on yours? as mine doesnt seem to want to go past 3.0ghz
 
Last edited:
How did you get 3.2ghz on yours? as mine doesnt seem to want to go past 3.0ghz
Click to expand...

Is your problem with your CPU at getting to 3.2 or the motherboard in running at 400mhz FSB...? If it is the motherboard you can go for 10x320.
If it is the CPU then you might want to think about....

My VID is 1.325v so it suggests to me that my E2180 will need a higher vCore to get the higher clocks. To get 3.2 stable on mine I have to enter...

1.5375v in the BIOS which equals...
1.5v because of vdrop which equals
1.475 because of vdroop

Remember that Intel's spec of these chips goes up to 1.5v anyway.
 
It must just be my v-core or the chip. As i have tried many different fsb and multi combo's. I will just have to up the Vcore more. As mine is set at 1.45V and Cpuz says 1.4V
 
clv101 said:
See this thread: http://forums.overclockers.co.uk/showthread.php?t=17801505
And this one: http://forums.overclockers.co.uk/showthread.php?t=17834215

Next time thing about the search funchtion?
Click to expand...

Woah - thanks for posting those threads and yes you are right about the search function :o

I decided to risk going back in the BIOS again and this time disabled the USB support for both the keyboard, mouse and legacy - I do not 'need' them and hope as I only use Windows not to. Whether that made any differnce or not I'm not sure but after pressing F10 and exiting I was amazed to find that the settings actually stuck...!!!!

Thanks again for posting those links, most helpful :)
 
I think it might also help if you change the PCI Frequency from AUTO and manually set it to 100 or 101, if I leave mine set to Auto whilst bumping up the FSB then on my mobo I get stuck in endless boot loops. Also after a bad boot I also tend to restore optimized settings from within the BIOS and then set everything up again from scratch.
 
I had exactly the same problem with my overclock getting 'lost'.

It turned out I'd had a Windows crash that had somehow tripped it to defaults, and when I tried to re-enable the CPU Host Clock Control the reboot would fail, then it'd reset to defaults again.

Eventually I noticed the RAM speed was wrong (it was using SPD and consequently overclocking way too high). Now I've manually adjusted the multiplier on it so it's at 800mhz again, all is well and I've got my overclock back :)
 
You must log in or register to reply here.
Back
Top Bottom