IBM Thinkpad T43 freezes until pressure is applied to the top

I don't have a solution to this problem but I know what the issue is because I have bought several of these unit and they all have one of two problems.

1 If they have the ATI X300 Radeon video then it is a GPU issue that has plague the T4x series and I believe it migrated into the T60 as well this is a very disturbing issue in the sense that IBM/Lenovo has known about this problem and won't take ownership and have a recall. The cost of these machine's are unbelievable when new and to have a problem like this it is unacceptable.

The other issue is the Southbridge and it has the same problem as the GPU, which is a solder problem.

The solder joints between the board and the BGA become cracked and cause intermittent issues such as freezing, HDD not to spin ETC practically everything runs through the Southbridge (PCI controller) even video control signals and USB.
The cause is flexing of the motherboard over time
Solution 1.
Find a place that does this type of rework there are some companies offering this service but do your homework before hand I am in the process of getting one of these boards done but the cost is not cheap. I think it is cheaper then getting a new motherboard

Solution 2

Get a new motherboard $400.00 and after three or four years have the same problem.
I hope this helps. Dee