hcodude022 0 Newbie Poster

so i have an old e machines computer in my room i basicly use it for chatting with friends and such.. i use my new comp for gaming and such, but about 5 months ago my monitor went out on my e machines.. i got a used monitor from a friend and about 3 weeks later it also went out.. now ive had the same monitor on it for about 4 months.. it hasnt went out, but after the screen has been on about 15 mins the image of my desktop will shrink to half size verticaly, if i turn the screen off for a few mins and turn it back on it will be back to normal size but will soon after shrink back to half size.. i have been told it might be my graphics card but im not sure.. i dont want to go out and drop money on a new card if thats not the problem.. does anyone know the reason it does this.. thank you for any help

- brandon..
- hollisterdude022@yahoo.com