While charging my laptop, the touchpad becomes very jumpy and sometimes does not even go in the direction moved. The computer itself also runs very erratically. While it does this, my computer switches between charging and not charging, even though the cable is still connected. The charging light blinks erratically.
I'll admit, I have dropped it once, but that was several months ago and there have been no problems of this sort. I am running Windows 7, and this computer is over a year old.
I have found that something that stops this problem is to have the adapter already plugged in and connected to my laptop. I don't know if this makes it easier to diagnose.
Well, now it is not working altogether. I have tried different outlets, but none of them charge it. It has run out of battery, and is now acting very strangely when I try to charge it: The charging light flickers, then after a short while it flickers while the next two flash.
More info: I have not been able to try another adapter, but when I tried to have the power cable in without the battery, the plugged-in light turns on and is steady. Trying to turn it on makes things like the caps lock and the numlock LEDs flash, almost as if it was trying to turn on. I therefore believe the adapter isn't supplying enough power for the computer to run (although this wouldn't explain the weird behavior when the battery is in). What I am going to try is leaving it plugged in overnight, and see if that charges the battery at all.