If your laptop appears to boot up and the hard disk LEDflashes, then the problem is probably a back light fault. This can be a faultyinverter or a faulty CCFL lamp. Please click on this link and follow myinstructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen
Make sure that you have the latest drivers from the manufacturer of your new video card.
Remove the video drivers for the current video card. Check the Start menu for any Remove utilities specifically for the current video card.
3 Remove the current video card in the Device Manager. Now you're ready to install the new video card.
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