09-08-2012 07:35 AM
I have T61 think pad with windows 7 64 bits and windows don't start with the battery only but they start when the electrical cable is plugged. It's very strange, please help me.
09-08-2012 08:13 AM
Welcome to the forum!
I'm presuming a dead battery. Do you have another *known good* battery that you can test the machine with?
09-10-2012 06:39 PM
Presuming both of these are geuine Lenovo batteries and not third-world-knock-offs, you're looking at a motherboard problem.
A blown fuse comes to mind.
09-11-2012 12:14 AM
Try booting to bios screen then insert a fully charged battery and unplug the power, if the laptop shuts off, then you have a motherboard problem, however I would definitely test the batteries in another computer just to make sure they work before you replace your board.
If it does run off the battery when the power is unplugged, but won't start with just the battery, try removing the battery and ac power and press the start button ten times holding 5 seconds each, then 30 seconds on the last time, then replace power and battery and try again. If that doesn't help you can try removing the cmos battery too and and repeating this step, but in most cases this too indicates a system board failure.