Alienware 17R3 UHD replacement part advice needed

Hi guys, I have had recently a few error comin up while using my laptop. First would appear sometimes while booting. It says that system memory has changed and I should reposition the memory. There are 2 options, F1 to continue or F2 to go bios. I have to interact to boot up.

Now the secound message started only a few days ago. While gaming I would be sometimes thrown out of the game into desktop and I would read the following message :

D3D11 Lost Device Error; HResult 0x887 a0005 Reason 0x887 a0006

I gotta say that the second message started after I tried to get rid of the first message by formating the drive, getting a fresh copy of win 10 ( latest available from microsoft via USB boot) and thinking it would go away as a software glitch.
Unfortunately it did not help. To note, the drivers from the alienware website for my pc for my integrated intel graphic card would not install as while trying Im told that the version of win is not supported. ( wish I kept my previous older version of win 10). I solved this by downloading the drivers from intels website and they would be the last drivers to be installed. Dont know if this matters.

So I decided to completely dismantle my laptop and found the above power cable looking dodgy. Could this be a problem? If so then, would the last picture ( blue background ) be a suitable replacement for mine? I was not able to find the exact cable anywhere.
All advice is appreciated and sorry for the long story.

 

What Ram are you running? Let's see a Pic of the ram sticks.

Sent from my SM-N975U using Tapatalk

 

Hi, see below. Thanks