monitor problem

the problem i have is when i start my computer the screen on my monitor starts up as normal then goes black and the monitor goes to standby. can anyone help me.

 

Have you checked the monitor connectors? Try disconnecting, reconnecting, and tighten the screws. Also try boot diskette, a Windows Startup disk and see if the problem occurs.

 

Boot into Safe Mode, and change your resolution and/or screen settings. They've probably been changed to something that's incompatible with your monitor and/or video adapter.