Hello guys,

I have three T21-Thinkpads with three different error-descriptions, this 
one here is 1/3:

_Description:______________#1: T21-800 freezes____________________________

The T21 in question boots, works fine, but after an unrecognized period of
time freezes. This results in the system "hanging" with the ventilation on.
However, I can not find any hot area besides the usual one: the HDD.

This is what I have tried so far:
- reinstalled the entire WinXP SP3 system
- removed/replaced RAM  -> no result, system also hangs with other RAM
- removed modem/lan card-> no result, system also hangs without that card
- removed dvd-drive     -> no result, system also hangs without that drive
- tore T21 apart and cleaned the ventilation-unit -> nothing changed either

Another thing that I recognized today is that the system does not run
smoothly, two examples:
1) If you move the mouse, the mouse sometimes stops its move and then
   appears where it should arrive. Means: It does not move smoothly, it
   jumps.
2) If I run any Win-XP-default-screensaver, I see that the system stops
   just as with the mouse and then continues.

What I want to say is that this system starts to run "flocky" after some
while as if it would lose its correct "heart-beat". This odd behaviour 
begins after approx. one hour running-time. The machine runs more and
more delayed and finally the ventilation starts and the system freezes.

More and more I have the feeling that this is not a temperature or (over-)
heating issue, but a problem with the internal BUS.

I hope you understand my humble description.

What can I do to solve this problem? Which FRU part numbers are to change?

I hope you can help me out and thank you in advance.
Many greetings!
-- 
Psssst! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen: 
http://www.gmx.net/de/go/multimessenger01
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