Static from speakers; lappy hangs during boot

Hey
Major problem here. toshiba a135-s2276

Static noise started coming from the speakers when I was running my PC normally. The lappy felt really hot, and I wondered if that would have anything to do with it, so I hibernated.

It is really really humid where I live these days, and it also happens to be a dusty city(perfect!)

I booted, and the static was still there, worse now the PC hangs randomly :cry:. It hangs at any place, bios, vista's bootloader, when the xp 'wecome screen' comes etc.
Mouse and keyboard seem almost unresposive. Although the mouse did respond after a minute of stroking the touchpad, and the keyboard works normally in the bios for 10-15 seconds.
Maybe the PC hangs after I touch any of these 2??

After a few more tries the PC still hangs here and there, twice it reached the welcome screen, I was able to hibernate it as well.

Things I tried-
1.I let it rest for 7 hours
2.booted without battery
3. tried a usb mouse
4.opened a few covers(ram, hardisk, dusted a lil)
5. Initially I got the static when I was wearing headphones
6. removed battery

Nothing works! HELP!!!

 

I have disassembled the whole laptop . It still doesn't works
In the disassembled state I saw that the fan stops spinning after 8-10 seconds.


Can anyone suggest absolutely anything that I can try?

Thanks