Yeah I'm kind of thinking it might be that.. especially that they had to work on the inside of the laptop..
And yeah I did a system restore to a point before giving it to them (they actually finished working on it while I was around and it took them about 20 minutes).
Just did all those in the same order but still no result..
Thanks a lot anyway.. I'm probably going to give it back to them and see how it goes.
Sorry for the trouble.