What the hell...?


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Ok, I keep getting random restarts and god knows what with my pc, and I think I've nailed it down to one thing. I think its down to the PCI lock I have on in the BIOS and its set higher than normal PCI speed, i.e. 37mhz PCI and 75mhz AGP. The reason this is locked is because I have a high FSB, 163mhz.

Now when I try and lock it to it's default value, 33mhz PCI and 66mhz AGP, in Windows, everything is drawn really slowly. Say I open My Computer....it'll open, and then before I can do ANYTHING with it (browse drives etc) I'll have to wait for it to draw the actual window for it, then all the stuff inside it, you can see it going down the screen drawing it all. You can't get anything done!

Please PLEASE can someone help me cure this annoying problem.

My system is a P4 1.6a @ 2.6ghz, 512ram, BD7 mobo, Win XP.

Thanks.

PS I didn't know which forum to post this in (Hardware or Windows) and I chose the latter, if it's wrong would a Mod please move it for me. Thanks.

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This should be in the Hardware Forum, but ill help you for now...

I think you've got your system overclocked way too much, just for a test, clock your processor back to 1.6 and you fsb back to 100 (or the standard setting). See if that fixes your problem...

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Ok I turned the FSB down to 133 (putting it back to 100 would rule out the use of the PCI Lock anyway, which is the cause of the problem, I think) and the PCI lock is set on 33mhz, the default rating for PCI!

But now the CPU is down to 2.1ghz (I know its fast, but hey ;)) so is there anyway to crank it back up to 2.6 or aybe a different way around this problem?

Thanks...

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Originally posted by bilston

Ok, I keep getting random restarts and god knows what with my pc, and I think I've nailed it down to one thing. I think its down to the PCI lock I have on in the BIOS and its set higher than normal PCI speed, i.e. 37mhz PCI and 75mhz AGP. The reason this is locked is because I have a high FSB, 163mhz.

um you may just want to set it down to like 155 or 160 even and see if you still have issues. i know that when i put my athlon up real high it gets pretty unstable but then either adding some voltage or just dropping it so the pci and agp will drop a clock cyle helps a lot. (ive even been able to undervolt and then overclock) also you may want to see if you have an older lan card or modem or sound card or even graphics card. a newer one might be able to run out of spec a little more.

also as far as i know you cant unlock a p4 but why would you want to when you can run 4x 160 or 640mhz fsb? at that speed your ram cant keep up with it no matter what it is.

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Well, I've sort of figured the source of the problems, the memory. I am back running the PCI at 37mhz, and all seems well so far.

Oh and about not being able to run the ram at high FSB, you seem to think that ddr runs 4x the FSB? Wrong, DDR runs 2x the FSB, so it can keep up. It all depends on what ratio divider you set the memory at which shows you if the ram cant take the pace or not.

Mines on 1:1, which equates to 163 FSB (underclocked, this ram is 166 :/) so DDR its nearly 333mhz. NOT the 640mhz which the CPU runs at. Rambus is quadpumped, not DDR.

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