Ive had this dell computer (Dimension 4600C) for 4 years. Last 3 1/2 years its worked fine. One day all the sudden the computer screen went into grey lines, the computer didnt freeze I can still do whatever I want it just the monitor screws up. Ive reinstalled the video drivers. The video card is a nvida geforce4MX 440 agp 8x 64meg. That didnt work, tech support had no idea what to do and the warrenty is out so I cant just tell them to fix it. Ive reformatted the whole computer and reinstalled everything, after I did that it didnt do for like a week then started again. Ive done everything by the book according to Dell when it came to installed software for the hardware, its completely updated according to Windows and I got Norton on it and it has no virus'. Would anyone by chance have this problem and/or know of any other things I can try?