Any suggestions on how to remove a frozen screw from back of macbook pro. Trying to upgrade RAM and all screws except one came out easily

" any suggestions on how to get it out"

Those screws are very tiny and easily stripped. What usually happens is the screw strips out in a square pyramid hole shape. I usually sacrifice one of my tiny flat bladed screwdrivers. I file it w/ a diamond file or use the grinding tool on my Dremel/like tool to make a new flat blade that will fit inside the pyramid hole and jam against the corners. Then carefully extract it.

I have some tiny diamond dental drills that are very useful in cases like this. I use them to make a tiny slot so a standard slotted jewelers screw driver will fit or to elongate the slot so that the flat blade can grab it.

If that doesn't work it will have to be drilled out but be careful because the threads into the Unibody case are aluminum.

Try KROIL. May not be the easiest penetrating oil to find, but it may do the trick.

Ciao.