Dismantle videos on youtube may show your exact laptop. It appeared that the external monitor was having problems too in the second video. If it was, reapply compound to the heatsink (sometimes the video chip is included) and clean out the fan exit (caked on dust is common) in case it is overheating.
By all means check the prices on the cable and the screen for your exact laptop. That should help determine if you should buy either or both.
I have changed several laptop lcd screens and they were from $40 to $65 and cables were even cheaper or included. I tried Amazon, but the prices on ebay forced me there. They were about half, check both as YMMV.
The screens are rather easy to change, but the cable usually involves a lot more dismantling. You already have been to the hard part.
I see time has affected the prices. I like to use Amazon because of their superb return policies.
Example - https://www.amazon.com/gp/product/B0096 ... 45011&th=1