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Discussion Starter · #1 ·
Hi All,

Today I upgraded my processor on my main PC to a P4 2.80 from a Celeron 2.2.

I went to put the Celeron in my backup PC (Asus P4B266-C mobo) and was unable to get a monitor display. I originally had a Celeron 1.7 processor in, and works fine when I put it back in place of the 2.2. Both processors, other than clock speed, are the same (400 FSB, L2 128K Cache). I have the latest (and last for this board) bios 1006 in. Checking on Asus' CPU compatibility page has the Celeron 2.2 listed as compatable with this board with this bios. All peripherals are properly seated in the mobo.

Could this be a memory problem? My stats are as follows:

Win98SE
512MB RAM
10GB HDD
Nvidia 5200FX 128MB RAM
SBLive! card
Adaptec SCSI controller
3com 56K modem

Any ideas would be appreciated. Thanks!

Cheers,
Mike T.
 

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H,

So, you made absolutely NO BIOS CHANGES?

Is it possible that you nudged the video card while working on the processor change out? Reseat it just to make sure.

Also check the Display's cable connection...right & tight???
 

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Discussion Starter · #3 ·
Hi,

Thanks for responding to my post.

There have been no BIOS changes. The update was put in several months ago. All video card/cable connections are secure. I also tried only 1 stick of memory, the video card and the cpu, same result, no display. Would it make sense to try the BIOS at default settings, and/or reload the BIOS? I thought also the possibilty of a memory issue, as the 512MB consists of one 256MB PC2700 (this should be backward compatable) and one 256MB PC2100 (this stick tried alone w/cpu & video card). All works fine w/the 1.7 Ghz cpu in and all memory is recognised.

In 'the perfect world' I should see the bios detect the cpu change so I can make the adjustment, but the monitor goes into 'power saving' mode.

Am open to any other suggestions.

Cheers,
Mike T.
 

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I looked at the boards specs:

http://usa.asus.com/products/mb/socket478/p4b266-c/overview.htm

And the fastest memory listed is PC2100 !!! :eek:

Don't know what the implications are with PC2700???

The wording in your last Post was a little confusing...did both sticks work with the 1.7 chip???

You also said,"Would it make sense to try the BIOS at default settings, and/or reload the BIOS? "

Isn't the BIOS already at its Default settings for anything related to the Processor, FSB, and Memory???
 

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Discussion Starter · #5 ·
Hi,

Thanks for responding.

Believe it or not, both sticks ARE recognised with the 1.7 chip, but I'll pull the PC2700 stick and leave the PC2100 in. Processor BIOS settings have never been touched other than clock speed except when it is required by the BIOS due to the cpu switch. The mobo is in 'jumper free' mode; no jumpers have been changed from their defaults.

When I pulled all components out except for the video card, cpu & memory, the PC2100 was the stick that I left in to do the test. The 1.7 is currently in the backup unit and all works as before.

Will try this again with my main PC monitor to see if I get the same result.

Cheers,
Mike T.
 

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"Processor BIOS settings have never been touched other than clock speed except when it is required by the BIOS due to the cpu switch."

What did you change? You may have inadvertantly upped the PCI Bus speed and affected the Video Card? Or are you using AGP Card?

Not sure how sensitive the AGP slot is to Bus changes...I don't do OC'ing.
 

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Discussion Starter · #8 ·
Hi Winbob & Triple6

To answer Winbob's reply - I'm using an agp card (I also do not overclock). The only changes to BIOS were disabling on-screen logo, boot sequence changed, using agp video card setting instead of pci card setting. This video card has 128MB ram, graphics apeture size was set to 32mb. All other settings were at default.

To answer Triple6's reply - I tried manually setting the jumpers, but to no avail. I also reset all BIOS settings to default configuration with no luck. I also went to Intel's site to do a processor comparison; all are identical except for clock speed.

I also put the 2.2 back in the main pc to make sure it still worked. Worked with no problems.

Everything is back as it originally was with the 1.7 celeron cpu in. I'm going to chalk this one up to experience, as this is my backup PC and not the main one.

Thank you both for your time and assistance on this. It is greatly appreciated.

Cheers,
Mike T.
 
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