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Problems with a New CPU

I have a Tyan Tomcat IV motherboard with a P75 CPU running Windows 98. I want to "upgrade" the P75 CPU to an AMD K6 200 (which the board supports).

I installed the new CPU chaning all jumper and voltage settings as per my manual. Windows is not ahppy with this at ALL.

I started the system and confirmed that the BIOS recognized thenew chip. Windows gave me some type of error that there was a probem wiht my files and I would need to restart (don't recall the exact error). This happened a couple of times so I decided to just reinstall W98. Well Scandisk kept reporting gazillions of errors (and fixing them). The closest I ever got was just past the "copying files for setup..." and then the system locks up. I finally switched all jumpers back and put the old CPU in. W98 is very happy with this setup.

What am I doing wrong?

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storm996

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Kuba

ASKER

Sigh.. why is nothing ever easy :) I decided to start first with the BIOS as the version you recommend is more current than what I am running. I downloaded the update as well as the flash writing utility (virgin experience updating BIOS). All seemed fine but I could fully boot. Around the time that W98 should start I recieve the error "Invalid system disk." A reboot gave the same message. I reinsalled the old BIOS and now all is well.

So evidently I am "missing something" when it comes to a new BIOS. Once I get the BIOS working properly (I am assuming you will have a sugeestion) should I be able to boot right into Windows or will Windows want to somehow be "notfied" of the changes?

Kuba

ASKER

well, I'm half way home. I found that if I setup the HDs in BIOS again I was fine. However W98 still isn't very happy. I have found a way to start W98 but I lose my CD to do so. At this point I'll close this question and try another that is W98 specific.

storm996

Looks like a quick CD trouble shooting session is needed. OK I assume the CD is IDE and on the secondary controller as a slave. You could try installing the dos drivers for the cd (device=cdrom.sys (or whatever its driver is called) in config.sys). This might 'remind' Win98 that there is a CD. Next thing to look at is the HDD controller section in device mangler, and possibly d/l from the Tyan site their version of the busmastering drivers. Worth a try. I'll now go look see if you've asked a question in Win98!