ThinkPad 390 with Celeron

Don't ask how to over-clock.
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crow6
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Joined: Fri Jun 09, 2006 7:51 pm

I just buy a 366Mhz MMC-1 package Celeron processor. I put it to my IBM ThinkPad 390 laptop (originaly with Pentium II 233 MHz MMC-1) and it...doesn't work :(
Any ideas?

ps I've newest bios avaliable on IBM website.
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Sharedoc
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Location: Finland

It may be because of different processor CPUID that the bios does not recognise.
Last edited by Sharedoc on Wed Jul 12, 2006 7:36 pm, edited 2 times in total.
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Sharedoc
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Does it still work with the PII-233?
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crow6
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Yes - it's still working with P2.
But with Cel is don't boot up at all - just black screen, no beeps etc.
And I found on the Net that oryginal TP390 doesn't work with MMC-1 Celerons. But I belive it's way to force it workinkg.
I tried to load Celeron MMC-1 microcode from the Net (maybe Intel www?) into bios using Phoenix BIOS Editor but it didn't help.
Can somebody help?
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Sharedoc
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Posts: 679
Joined: Mon Aug 18, 2003 8:46 pm
Location: Finland

Microcode won't help if the 390 bios doesn't recognize the CPUID. Also L2 cache size is different in Pii and Celerons. Propably is best to return the Celly while the seller still remembers you...
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