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Dell Dimension 2400 Windows 7 Screen resolution stuck at 480 x 640
I have recently loaded Windows 7 (Home Premium) on to a Dell Dimension 2400 (32 bit). Installation went smoothly but screen resolution is stuck at 480 x 640 which makes the computer practically unworkable. I understand (but am nor sure) that Dell does not support Windows 7 on this machine and the only solution is a new video card. I badly need some expert guidance.