Screws are not coming out.

Hi,

I just bought new ram to upgrade my early 2011 Macbook pro 13.

I have two screws in the back that just does not move at all. I have been trying to heat the screws up...nothing. I have no more ideas. I have used 2 sets of screws and they just won't turn an inch.

I just need to get them to start turning. Any ideas ? will i damage the laptop if heat it up with my hairdryier?

Buy a mac they said, you won't have any issues they said, Mac just works they said.

Regards

Mattias