The mother-in-law brought me her Gateway NV57H13U laptop showing strange glitchy video on the LCD with weird colors and such. I opened the lid and found that slight pressure on the video cable at the LCD connector changed the glitch which led me to believe the cable or connector was bad.

I have done the following:

Checked video w/ external monitor - result: good video
replaced cable - result: video still corrupt
replaced LCD - result: no video, only backlight using either cable
Updated BIOS - result: no effect

The original LCD P/N is B156XW02 V.2 the replacement is B156XW02 V.6 (visibly identical). Google tells me that both versions were used in this machine. Any ideas why this new LCD would not work correctly in this laptop?

Thanks