I have a broken ThinkPad T61. It ran hot and died while on AC power. When I attempted to boot it, I got the BIOS message "Fan error." I'm assuming that something got too hot and broke as a result of the fan dying.
Now I cannot run the machine on AC power or charge the battery. However, when I use a battery charged by another computer, the machine runs with no apparent problems. I guess the machine could overheat since the fan is broken.
Am I right in assuming that the fan broke, or is something else going on? What can I do about it?
UPDATE: After the laptop cooled down and it was dropped on the floor (that part was unintended), it can again run on AC power. Fan is dead, that is for sure. I am starting to doubt that there ever was an AC problem, but it was just the BIOS that blocked for boot since fan would not spin (fan error outputted to screen).
So fan needs replacement. Found this guide:
Whether or not AC will continue to work, only further use will tell.