some resolves
1. remove both batteries then turn it on... password should vanish if it is just power-on password.
or
2. turn over the PC look for keyboard symbol undo that screw the undo any screws that are in line with the power panel remove this panel if any screw holding down keyboard undo those lift keyboard to one side do not remove completely nor the power panel leave everything connected.How look in the bottom left corner of keyboard recess normal u will see sticker saying rtc with arrow pull that wire plug out. if u can se it pull any that are red or red and black. go make a cup of tea. then come back. with battery out connect the power supply press power button and press F1 or F2 depending on ur setup. It may just...