Your question isn't perfectly clear but if you've got a monitor problem, try borrowing a known "good" monitor from a friend or family member and see if the problem continues. If not, then you know it's the monitor.
If a replacement monitor isn't the problem, then "Shutdown" issues are normally a problem with unneeded programs or services that are running in the background. Please click on the link and follow ALL the procedures mentioned:
Another good option would be to visit the eMachines site and see if there are new, updated drivers for the hardware on your machine..
Hope this helps.
my monitor goes blank but the PC is still on. The only way I have found to shut it down is to hold the blue power button in. I Did not get and cannot find a manual. I will use the troubleshooter later but need to find the best way to shutdown until I have time. ZA may be the problem as it was "not responding"