weird computer-screen epilepsy

My computer has been being annoying, and I am asking here to see if anyone is able to suggest a way to make it behave again. At apparently random intervals when trying to work on my thesis my screen suddenly goes spastic, everything jumps up and down by a centimeter or so for a bit, and then suddenly I'm at the bottom of the document in the list of references instead of where the cursor was the moment before. Generally, once it begins doing this, it continues to do it, all too often, for a while.

( technical details behind the cut, which may or may not influence the helpful suggestions I hope you all have )

I would be ever so grateful to whomever can come up with a way to solve this problem--the longer this thesis gets, the more difficult it will be to cope with it suddenly flickering and skipping to the end of the document like this.

weird computer-screen epilepsy

My computer has been being annoying, and I am asking here to see if anyone is able to suggest a way to make it behave again. At apparently random intervals when trying to work on my thesis my screen suddenly goes spastic, everything jumps up and down by a centimeter or so for a bit, and then suddenly I'm at the bottom of the document in the list of references instead of where the cursor was the moment before. Generally, once it begins doing this, it continues to do it, all too often, for a while.

( technical details behind the cut, which may or may not influence the helpful suggestions I hope you all have )

I would be ever so grateful to whomever can come up with a way to solve this problem--the longer this thesis gets, the more difficult it will be to cope with it suddenly flickering and skipping to the end of the document like this.