You could have a defective screen - a defective inverter or a CCFL lamp or simply the video cable needs reseating. After reseating the video cable and the problem is still there then :- To determine if you have a LCD screen or video card problem, read this and follow the instructions. Defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case. The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills. Check out www.lcdparts.net for parts, repair service and DIY info.
Turn off the computer, then hit the power button to turn it
back on and immediately start hitting the F8 key repeatedly until you see SAFE
MODE. Take the Safe Mode option and let it boot up. Safe Mode will look
different to you, the screen will be darker and the icons bigger, this is
normal.
Try connecting another monitor to the computer.
Borrow a monitor from a neighbor, friend, relative or co-worker and
connect it to the computer. If the Borrowed monitor shows the 1 inch
black space then your video card might be going bad or you might have a
virus infection. If the Borrowed monitor displays ok then your original
monitor is bad.
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