CPU Not Showing Proper Speed - Nerd Help!

RedTaco4x4

Member
Joined
Mar 20, 2005
Location
Durham, NC
So I was playing around with my PC (2.66GHz P4 on a Intel D865Perl MoBo) and I was attempting to overclock it. All was well and good. I had it overclocked a bit and then I accidently changed a setting to the wrong thing and upon restart nothing. Screen was blank, no computer response, no biggie. Well, to fix this, I did a CMOS reset (changed jumper on mobo and took out battery). PC rebooted with no problems. Prior to all this, the BIOS settings were completely default, so default should be fine. When everything loaded, the System Config showed 1.06GHz. I reboot, same thing. I rebooted into BIOS this time to see what it showed...same 1.06GHz. I have reinstalled the BIOS (same version, which is the latest) and it still reads 1.06GHz.

What to do next? I need my 1.6GHz back!!

I have the computer in the BIOS settings right now, so changes can be easily made!
 
I know this is kind of old-school these days - but does the board have jumpers you can set to manually specify the clock/multiplier... or even a working range?
 
Download AIDA and see what it reports for the CPU speed. Only you know what you have changed leaving us to guess. The AIDA tools is a great freebe for total system reporting and links to drivers. You may have cooked the silicone unless there is a jumper in the wrong place. As suggested, check the MB site for the manual and drivers that may have to be reloaded. Get the jumpers right, check with AIDA and then download drivers. If still bad, may need a new processor. You can get a used 2.6 from Ebay for around $50.
 
Most of your newer motherboards are going to set the CPU clock in the bios, not using jumpers on the board. I checked the Intel site and that is the case with the D865Perl.

You'll want to go into the bios and look for the CPU clock frequency settings. MotherBoards differ, but that's typically where you're going to change the speed, by changing the clock frequency. On boards I've seen, you can change the clock frequency and see the resultant CPU mHz setting.

With that you should be able to fiddle with the clock setting to get where you need to be for your CPU. If changing the clock frequency doesn't show you the CPU speed in the bios, then I'd bump it up one setting at a time, boot the computer and check the speed that you get. Tedious, but safer than going too high.

I'm guessing you could find more specific steps on the web, but you need the exact model of your CPU to get that. Just having the speed won't necessarily get you the settings you need.

Good luck,
Jeff
 
Thanks for the advice! Looking through the BIOS, the only place to do any kind of clock speed adjustment is through their "Burn-In Mode" and that only allows a change of -2% to +4%. I can't find a place to further adjust. The other "speed" adjustment is the "AGP/PCI Burn-in Mode". I have not touched that one. Everything is right back to default, which was working great until I played with it.

The manual shows quite a few different BIOS menus than what I have available. I'm missing the "Maintenance" menu...looks like if I had those menus, I'd be set.
 
Looking at the manual online (http://download.intel.com/support/motherboards/desktop/d865perl/sb/c3176401.pdf), section 2.9.2 talks about a BIOS setup configuration jumper block. It looks like the jumper position decides whether the maintenance menu is shown. Not sure if that will get you what you want, but I guess it's worth a try.

Your other option, depending on the brand computer, would be to see if contacting the OEM manufacturer would help. It's a longshot, but say the machine is a Dell, Dell support might be able to help.

J
 
must have missed the part about the jumper config for menus...thanks. I'll look into that part.
 
well then...switched the jumper to show the maintenance menu and I have my 2.66 GHz back! but after restoring the jumper to the orginal position, it goes back to 1.06...grrr...
 
You got me. I guess worst case you could leave it in the new jumper position. I can't see anything that would hurt.
 
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