Batteries and Power

[#1]

My 1 year old Satellite stops responding when AC power is given to it from battery mode.When connected the laptop does not start at all...freezes after the boot screen.The PC runs perfectly well on battery only and my battery cannot hold a full charge and needs to be replaced.Any other AC connected still freezes the machine.I have formatted my harddisk, upgraded my BIOS and OS from Vista to Window 7 but still the problem persists.

If you have some suggestions please lemme have them..

[#2]

I have a Satellite A205-S4777 running Windows Vista that does the same thing. I can charge the battery up using the OEM charger that came with the laptop. However, the computer will not operate if the charger is plugged in. I can do everything I want within the time restrictions of the battery (1.5 to 2 hours). But the moment the charger is plugged in, everything freezes, or the computer shuts down.

I have not tried a different charger, but I have read on other sites, that some people have tried this, and still had the freezing or shutting down when the charger is connected.

If there is a quick and easy fix for this problem, please post it here as soon as possible. I need this fixed!

Thank you!