HELP ME!! I just got new RAM today from Crucial (2x4gb) to put in my new iMac so I can give it 12gb. So I flip my mac over and start taking out the screws, the first two require some effort but come out after a minute , however the one on the left (when its flipped over) seems to be completely stuck! I have tried putting a huge amount of force against it whilst turning (I thought the screwdriver would go through the computer) and it hasn't budged 0.0001 mm!! I am turning counter clockwise (like all the other ones) and using the same screwdriver, I have tried about 5 other screw drivers (phillips heads). It is just not moving! I think it either has to be glued in or it welded because my hands are virtually swollen from the effort. Also I am starting to strip the top of it so I need something that will work. Also I will not drill into my commuter to get it out.
PLEASE HELP!!
I just want more RAM...

PLEASE HELP!!