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Press and hold down the power button until the computer shuts off. Run the computer in "safe mode" - by pressing F8 during boot the safe mode selection can be found. If the computer does not freeze then you may have a virus or the hard drive is corrupted.
With the dropping price of monitors today; can get a good 22 inch lcd for less than $200 in most stores, it would probably cost more to have the old monitor repaired than just replace with a new monitor. Hope this helps.
This is a power supply problem in the monitor. There is an unstable component or components that are failing or you have some cold solder joints in the connections.The reason it turns on is that some components are self healing and will sometimes stabilize after warm-up periods.Cold solder joints sometime close after heating up in the circuit You should return to dealer for repair or replacement. Hope this helps you.
try to start your pc in safemode with vga mode with thjis faulty monitor
hope you know how to do it
start pc (powerr on)
then continuously press F8 key then it will show you boot menu
select safemode with command prompt
then if it show desktop on screen this means your monitor is having problem with resolution try to downgrade your monitor's resolution
rightclik on desktopgo to properties
here you can find screen resolution make it to 800X 600 just for one time
then restart your pc it will auto select proper screen resolution
I have lots of Dell monitors and none of them has the ability to flip the screen orientation built into them. What I suspect has happened is he accidentally hit a keystroke combination that activated a feature in your video card driver. If you have the built-in Intel Extreme Graphics read this link and let us know if it helps. http://engtech.wordpress.com/2006/08/01/stupid-windows-features-monitor-display-turns-sideways-or-upside-down/