Hard Drive stays on when Lid is closed

I just hired 'Geek Squad' to put a dual hard drive in (and take the CD player out) which they did but now when I close my lid the laptop stays on and when I open the lid the laptop falls asleep and will not wake up. I have to restart my computer every time in order to use it.

I was not having this problem before I put the second hard drive in and Geek Squad refuses to look at it.

I tried resetting my NVRAM / PRAM as well as my SMC. I tried this:

"if the computer still doesn't sleep when you close the lid:

you could try booting to the install disk. while booted to the install disk, try closing the lid. if you close the lid, and the computer dose not sleep, you know it's a hardware issue. If the computer dose sleep, then you know it's an OS issue. "

And the computer stayed on during this process so I believe it is a hardware issue. Does anyone have any suggestions on what to try next?