I have a Lenovo R61 that was working fine except that the fan has been rattling lately. I came back to it after a normal day and it was off. It would not power on at all. The indicator light for the AC power being plugged in would not come on, either. I reseated the battery, and nada. I tested on another laptop and confirmed the AC adapter is fine.
Finally, a colleague removed the battery and plugged it in, and it worked! However, it only worked for 2 or 3 mins and spontaneously shuts off. Almost as if a fuse or circuit breaker is tripping internally.
Any recommendations? (btw, I have Ubuntu, not Windows, installed on this thing, so no Windows-centric recommendations, please)