Compaq laptop gets partial blank screen

[microam_i]

I am having Compaq F700 US laptop with me.Due to some virus issue i had recently formatted my Compaq laptop and install Windows Vista as my Operating System and also updated all my drivers too.But i don't know after installing display driver and i rebooted my laptop from then my laptop screens get partially blank.I have try to find the solution over internet but was not able to solve it.I hope my query gets solved over here.

[David23]

It might happen that the display driver which you have installed on your Compaq Laptop might have some issues try to boot into safe and reinstall the display drivers at the same time also try to connect your laptop with the external monitor and have a check are you still getting partially blank screen.

[microam_i]

I have try to update the drivers and i am able to get display on external monitor but not able to get on my laptop still getting blank screen.Please help me out with this issue.

[ApPy10]

There would be some issue with backlight flashes and if the backlight won't flash even if you press Fn+F4 then try to open LCD panel and reinsert cables on both sides of the FL inverter board.Even if you are still facing same issue then try to replace the FL inverter board.