Question about IBM ThinkPad 390x Notebook
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Posted on Jan 02, 2017
SOURCE: IBM Thinkpad T21
This is a common problem with the T20 series Thinkpad. The problem is with the power management chip. Unfortunately, you will have to replace the motherboard to fix it. Since these are a bit on the older side, you can get a motherboard off Ebay at a reasonable price.
Posted on Aug 05, 2008
SOURCE: my borther has a 390x
Current processor should be a Pentium III 450 MHz.
As far as I know, the standard RAM os 64 MB and maximum RAM is 512 MB. Even a memory upgrade will cost you around 80$.
I would honestly suggest to forget a processor upgrade because it will cost you a lot of money. Probably more than a new laptop.
Posted on Dec 11, 2008
On the underside of the unit, you will see a box that has a thumb lift on it...beside that a lock/unlock switch. Slide the switch to unlock and then lift the thumb life which releases the battery.
Posted on Mar 24, 2009
You can go to
and download the drivers for your 390x. Do burn a Cd for future use.
Posted on Dec 11, 2009
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