Guide :Tablets & eReaders : Portege M400 PPM40U01000E Tablet PC

Power problem Hi, I had the Portege M400 connected in my car through the cigertte lighter which it has been working up till now. All of sudden the screen went blank and the computer turned off. Then the computer started making a beeping type sound while it was off. What could be the problem ?

Posted by Salg on Nov 23, 2007

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