

[Edited the thread to add model name to the title and issue detail]
Which lower cover are you referring to?. I have a 256 GB kingston kc600 SSD upgrade kit but can't find anywhere that will accept a SATA cable or 7mm adapter. And while looming around I did something because my screen won't turn on. It works with an external monitor though. I added a 8gb ddr3 ram and trying to upgrade
The lower cover is the one you removed to add the RAM module. The HDD connector is near the RAM socket. You probably have to re-seat the video cable a few times to get the screen working again.