Does it have on board graphics(built into the motherboard) If you are trying to install a different video card, then you need to set it up.
Hook the monitor up to the old one with the new one plugged in Look on the screen on startup for a SETUP or BIOS button(Usually F1, F10, or DEL) then go to ADVANCED and look for anything having to do with VIDEO, then if it gives you a list, with the new card listed, choose the new one. Then restart with the monitor hooked up to the new card.
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I would say your Graphics Adapter is going. Has it been overheating? Have you cleaned the Fan, Vents, Heatsink? Have you connected to a External Monitor? If the problem follows to the external monitor it's likely a Graphics Adapter problem, which is a problem in a laptop. Have you tried booting to Safe Mode? In safe mode your windows software will use the generic graphics driver.
If its a Desktop computer, Switch it off, disconnect the power cable, open it up and remove the Graphics card from its slot. If you have a network cable, remove it too and try to boot the computer. If that fails, then try to boot your computer while pressing F8 which will lead you into safe mode. Try and see if the computer can boot in safe mode. When you boot in safe mode, go to start, then open Control panel and go to "Add and Remove Programs" tab. Uninstall the driver that you recently installed. If you can not see them in Control panel, then click on start, right-click on "My computer" and go to its properties. Then go to device manager, and look for any yellow question mark or exclamation mark. This will normally be visible on the device that failed installation. Then right click on it and select uninstall, this will remove your corrupt drivers. Restart the computer and try to boot is normally
Turn off the machine, now turn On again and keep pressing F8 (don't hold down, just keep tapping) while it boots up, when you see the black screen with white texts, use the arrow up and down key and select "Safe Mode" by pressing "Enter". It'll boot into Safe Mode, from there, try reinstalling the Graphics drive (your ATI Graphics Card driver), and reboot the system normally. It'll work fine. If you can install the drivers from the Normal Boot (boot up without pressing anything), then it's better. Try your best. If there's no other hardware or software conflict, your problem will be fixed.
You can also try uninstall and reinstall the Adobe Flash Player.
Hard drive has bad sectors on it which is why its giving you that message even though you can go thru the restore. Normally going thru the system cd and then the recovery cd should bring you into windows with the device drivers installed.
Do you have the original recovery disk? I recommend inserting the recover disk, restart the computer while continually pressing F12. Select boot from CD, press any key when asked, and you would want to do a "repair". That should fix your problem.
Try booting into safe mode.. press F8 before the windows screen, and select Safe Mode as the boot option. If that is a temporary fix, then reinstall the driver, and make sure your Hertz settings are correct!
Well it is most likely a issue with the Video driver as you are able to boot to the safe mode.I would suggest going back to the safe mode and deleting the present driver for the video from the device manager.before you restart the system just download the latest version from the support.dell.com so that you can reinstall it.Also check in the graphic properties which screen is set to be the defuat.Incase still not working i would suggest reinstalling the operating system before replacing any hardware.