When playing 3D games or running graphic intensive applications, T61p tends to randomly power off by itself, crash back to desktop with error message saying display driver stop responding and recovered, or just result in BSOD. In some occasion, you will get a BSOD with Memmory parity error.
This mostly happens to those who have 2 Dimms of RAM installed in their machine. If one dimm of RAM is removed, the problem seems to go away. In addition, some users sent their thinkpad to depot for a motherboard replacement and that seems to work.
This problems have been reported by a lot of T61p owners at other forums and it has been discussed extensively and we were told that Lenovo is seeking a solution. What is the final outcome to solve this issue?
Upon analysis, some T61p system boards appear to have higher sensitivity to a condition in which the power draw of the GPU in conjunction with fully loaded memory bus creates a voltage drop condition, which in turn produces the noted symptoms. To resolve, engineering has revised the value of a discrete component to enhance voltage stability.
This update is included for all new T61p systems built on or after 03/20/08 . Due to differences in usage, memory config, and board tolerances, only a portion of previously built T61p systems may ever experience this condition.
Owners who have experienced these symptoms should seek service at their convenience, after working with support to rule out any other potential causal factors.