URGENT!!SZ4 reassembly help! pics included

okay so i needed to replace my DC socket, wish i did a disassembly guide, anyways, i opened my laptop to check out what was wrong in the 1st place and got it into pieces, then i saw what i needed i ordered the part. 1 week later here i am i got the DC socket in place and i just cant figure out where this part screws in because it wont reach the left thing ,
does it go under another screw or to the power board?
sorry im really not in my mind cuz im really worried im gonna mess something up, please if someone can help me it would really really help
thank you!
sorry if i sound kinda stupid

EDIT: it comes out of the screen cable from the left
if someone can just remove the top speaker grill, and just check for me, it would mean the world to me

EDIT 2: okay got it fixed and got everything togher to find out that i now have 4 extra screws well ive checked the middle chassis and everything seems in place and screwed in, so i guess oh well, ill found out in the long run, sucks my charger had flying sparks and went dead a week ago, so i have to get a new charger, and then find out if ive fixed it up or messed it up even more , my battery only lasts 1hr or so, so ive used it up last week, ill let you guys know if i got everything to work that is if anyones interested Cheers!

 

hope that you got everything to work !

 

Yeah just got my charger 20mins ago, thankfully everything is working smooth,i just hate the fact im going to have to open it up again to replace my USB ports in few months when ive got enough money.(lol i need a job ) which will cost me £17.50 from ebay
anyways all thats left is my dumb webcam not working for like over a year now, and, i think thats pretty much it! oh yes and my headphone jack, or maybe its just my headphones? ill check up on that