I have an Emachines HDmonitor model number LE1987 that came with the computer. I start up my computer and the monitor comes on and shows the boot screen, but only for a few seconds before going black. I turn the monitor off and back on, the screen shows my computer(at login screen now) but goes black after a few seconds again. I repeat the process but no luck the monitor wont stay on. The monitor is a little old (4 years) I've tried hooking it up to 2 other computers thinking its my computer, but the same thing happens every time on all computers. By the way im using vga. Any solutions? Bad monitor? Anything would help. If I have to get new monitor then thats fine.