|POST beeps = hardware failure/error or memory read/write error, it cannot be the software because POST occurs before the Master Boot Record (MBR) is loaded, therefore it could be several factors:|
I would suggest you give the laptop to somebody that knows what their doing, and ask them to reset the CMOS.
Do this by referring to your manufacturers website and looking for the motherboard JBAC1 jumpers, they are 3 pin, and you would for example:
(i being the exposed pin, | being the jumper)
leave for 10 minutes (i forgot to mention, power off and unplugged before you do this!) and then swap back the jumper to its original state.
It will reset all CMOS settings, voltages etc.
If you dont have a jumper, just remove the CMOS battery, leave for about 30-40 minutes and put it back in. Remember to press the power button a couple of times after you've unplugged everything to ensure youve discharged any electrical charge out of the capacitors, and use an anti-static wrist strap if possible to prevent damaging any other components.