Monitor turns itself off ,sometimes before windows is loaded ? if I turn it off and back on nothing is lost ?

There are settings for the sleep (power saving) modes that came with Windows updates.
Some of our monitors also shut off the power indicator light when they go to sleep.
Solution: Check the power saving settings in Windows.

That could be the monitor or the video/graphics card in the computer. Try another monitor as a test to narrow the problem. If it's a laptop, therer's usually a VGA port where another monitor can be installed. You might need to press a Fn key combination to turn on the second monitor in that case.

[u][b]LCD Monitor Shadow Effect[/b][/u]
This problem is best described as the LCD monitor "Shadow Effect".
The solution to this very simple. No software or hard ware changes required.
The cables that are connected to the LCD monitors are causing the problem. Its also called as electromagnetic noise or electrical noise.
[u][b]Solution: [/b][/u]Keep the two cables - (power cable and moitor display cable), that are connected to the LCD monitor as far away as possible with each other and also away from other electrical cables.
Thats it. Your shadow effect is fixed.
Thank you.

1.check power supply section any dry points
2. To replace all electrolatic capacitors in Power supply
3.Check Connectors Properly connected Or Not.
4.Replaced Microswitches in Front pannle.

start up windows in safe mode and see if you still get the problem. did you use the same vga cable???

Maybe your computer is overheating and turning itself off, happens to mine sometimes but not as often as 8 mintues.

Ok so its connected to your pc?
check settings on the monitor itself [if you'restill able to do that]
disconnect all your usb devices restart your computer and try again.

Is it in a cold room ? that might be the problem.

Is it in the same powerbar as your computer ?
I'm not sure but if your power outlet where you connect it is simply looped to the rest that are in use [lazy electrician] then it might turn off because a power shortage.

Good luck

Check the buttons on your monitor for possible shorts. Sometimes pressing a sequence of buttons while turning the monitor on will lock the OSD.

Have you had a look at the cords? Is there any damage to the hardware itself? Maybe there is something else wrong. Tried running virus scans? I know it's a long shot but it's amazing at what viruses do to your machine.