X41 random shutdowns (freeze, black screen)

[oliwek]

Hello, I have bought recently a 2nd hand X41 Tablet ; it came with a fresh install of Win XP Tablet PC edition, and the reinstall hidden partition.
This laptop succeeds in all PC-Doctor hardware (diagnostic) tests, and generally works without issue when sitting on a desk ; however it randomly freezes (black screen, with just battery + "Z in a cercle" + eventually WLAN LEDs lit, unresponsive to everything but a 20s press on the power button). I suspected earlier the thinkvantage hard disk driver (anti-fall) that would cause freezes, but disabling it doesn't help, and even booting from a liveusb linux drive shows the same issues, so it must be hardware related.

I don't know if the bios could (heat related?) abruptly shut down the laptop ; however I don't think it's heat as the laptop succeeds in all tests stressing the CPU that i have tried (max CPU temp during PC Doctor tests was around 60 or 61°C, PC Wizard 2010 says). I suspect now a loose connexion somewhere. Someone in another thread said to check without battery, AC connected, to see if an old defective battery could cause the issue (even on AC when battery attached), but even so the laptop still freezes (when moved I guess).

Any advice? Should I disassemble to check something?


edit : it seems really similar to the the post from joshchau here : http://forum.thinkpads.com/viewtopic.ph ... ze#p610741



thank you

[topmahof]

You could take the keyboard off and maybe see if anything was spilled on it. Make sure all the screws are in the bottom of it and make sure they are all tight.

Any errors in windows error reporting?

Anything running in task manager that looks strange?

Try changing your power options in control panel and make your settings the same on ac as on battery.

It does sound like a hardware problem, being that it does it with any os.