i have a hp palivon laptop, had it for about a year. no problems. well i inserted some new memory, 256 ddr. i put it in. started it up and everything worked, every thing loaded up. i shut down windows and the laptop shut down. i pressed the start up button but nothing worked. i put in the ac adapter, and the computer started up but didnt' boot up from the harddrive. but the laptop never turns on when the ac adapter was inserted. and the laptop wont even boot up with the battery.