Can someone please help me , I have IBM Thinkpad R51. When ever i take the charger off the back of the laptop , my laptop hangs with a little movment. how ever it never hangs while connected to the charger. I tried to change the batteries but same problem. I formatted my hard disk and put three different kind of Windows xp and vista but having the same problem. I ran the chkdsk but invain. I tried to swap the Ram but same problem. However, It works fine in the safemode with the battery and without the charger but not in the normal mode . I will really appreciate if someone can help me here.