P4 Upgrade Help!!!

[Chickp74]

[B]Hi

I really really hope someone can help!!

I recently bought a new (well new to me!) P4 2.8Ghz processor as an upgrade from my Celeron 2.0Ghz. However, when I boot up I get the following message...

"CMOS Checksum Error - defaults loaded.

Warning! CPU has been changed or CPU ratio changed fail.

Please re-enter CPU settings in CMOS setup"

I have looked in the BIOS but don't know what these settings should be or where I should change them!

I really hope someone can help!! I have a Shuttle AV49V 478 socket motherboard with Pheonix AwardBIOS.

I am totally stuck!

[Feck]

Check if processor is 533FSB, that board doesnt support 800FSB processors. If its 533FSB then you need to change a jumper on the motherboard to 533(133)FSB as all P4 celerons are 400(100)FSB. See below:-

Hope this helps.

[Steve]

Just load the CMOS and save the settings - it's probably all that's needed.

Also check the speed reported is right, if not, you may have to do what the guy above me suggested too.

[Kezzer]

Have you tried resetting the CMOS?

[Chickp74]

Ta for the advice...am gonna have a go now and see what works!! Will get back to you all...

[Chickp74]

Hi

The motherboard is 533 MHz FSB and supports P4.

I have checked the jumper settings and they are set for 533 MHz, and I still get the message when booting.

I have tried clearing the CMOS, and still, the same message...

This may seem a bit ignorant but Kez I am not sure what you mean when you say load the CMOS and save...if you can explain I will happily try this!

Any other suggestions would be great...

Thanks again to ALL of you guys!

[Feck]

Go into the BIOS, select 'Frequency/Voltage control', set 'CPU Clock' to 133. Save and exit, PC will reboot... hopefully with no errors.

[Chickp74]

Just load the CMOS and save the settings - it's probably all that's needed.

Also check the speed reported is right, if not, you may have to do what the guy above me suggested too.

Hi again

Think I was panicking unecessarily! I did as you said Kez and loaded the CMOS and saved. It then booted in SafeMode and now seems fine. I have booted several times and is working great!

BIG THANKS...to all of you for saving me stressing the rest of the weekend!