Please help me. My windows XP emachine boots, but immediately after booting my monitor stops detecting signal and turns off. The OS however is still running. I can log in and control the desktop with my keyboard, but my monitor will not display anything. I tried my monitor on a working computer and it worked fine. When I boot into safe mode, the screen displays fine, except everything is enlarged quite a bit and some program windows will not fit on the screen. Please help me!