I have had the exact same problem for well over a year now. It started with the volume window coming up on the screen like someone was adjusting it on the top of the keyboard. Then the treble/bass was going wonky. There were also problems with the wireless shutting off and coming back on but, not as bad back then.
My husband had a friend install some kind of static guard inside the laptop and for awhile, that seemed to stop it all. Then a few weeks ago the wireless issue arose again with a vengeance and it's been pure hell!
When my wireless goes off and on continuously, it wreaks havoc with the finger pad (mouse pad device). The cursor becomes stuck and won't move smoothly. It makes using the laptop at all close to impossible.
If there is any way to fix this, I'd love to know because I'm very close to pitching this computer in the bay!