I figured I'd start this thread while this MBP is having a rare occasion of functioning. Most the time I can't use the keyboard or trackpad because at startup, the cursor is frozen at the upper left hand corner of the screen. For a while there, a PRAM reset would free up the cursor, but now the Macbook is not responding to a PRAM reset. Startup in safe mode or SMC reset aren't working either. I already have an anxiety disorder as it is, I don't need this computer ruining what little ability I have left to cope with life.