I have an AccuSync 70 monitor. It has a grid pattern (the grids are about 1 inch SQUARE) on the whole monitor. The grid pattern stays there even when I start the CPU. it also stays there when i turn the monitor on when the cpu is off. when the cpu is off the grid pattern goes from light blue on most of the screen to black on most of the screen every 3 or 4 seconds. Whatever the color the grids are always there. when i start the cpu the grid pattern alternates between green and black. but doesnt go away. what the *censored* is this? im using an older 1 ghz computer with an AMD athlon processor, running xp pro, the hard drive on the computer was replaced about 3 years ago. thank youWhen did the start happening / have you tried ANOTHER monitor in its place?

Alan <><  it's happened periodically over quite some time, but normally i would just turn off the computer, reboot and it would go away. now it won't go away and ive rebooted many times. have not tried a different monitor. just yesterday i saw the windows startup screen on this same monitor but the computer never finished it's startup and then got stuck in this grid pattern. i've already unplugged the monitor for several minutes and plugged BACK in...download the driver for this monitor from here and see if there is any improvement
http://monitors.free-driver-download.com/NEC/14484/NEC-AccuSync-70-Monitor-Driver-Windows-98-ME-2000-XP.html

or this one

http://www.opendrivers.com/driver/214484/nec-accusync-70-monitor-driver-windows-98-me-2000-xp-free-download.htmloriginal NEC Drivers are from here:-

http://www.necdisplay.com/support/main.cfm?thePage=http://www.necdisplay.com/support/css/signedinf/files2.htm&title=Display%20Device%20Drivers

from there you can also access the problem solving troubleshooting section of the web SITE