i searched, but couldn't find anything. i know at one point this was brought up, but i can't find it. my monitor(M992) won't stay in position vertically. i have to make an adjustment everytime it boots back up. it did this when we first got the computer over a year ago running 1024X768 res, but eventually went away. since i've gone up to 1280X1024 it's doing it again. suggestions?