Well, now what do I do? Was restarting my laptop, when it froze up, so I had to push the power button to turn it off and then turn it back on. Just as I did though, it hung at the logo screen, and then it said:

"Internal hard disk drive not found. To resolve this issue, try to reseat the drive.
No bootable devices--strike the F1 key to retry boot, F2 to enter Setup menu, F5 to enter PSA"
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So then I get into the pre-boot diagnostic screen. Guess what it shows me there?
Click image for larger version

No seriously, WAT? If anything, I made sure to take extra care not to bump the laptop too much. I tried plugging it into my PC tower running Windows 7, and I tried using a hard disk enclosure and they don't work.

This hard drive:
Newegg.com - WD Blue WD5000LPVX 500GB 5400 RPM 8MB Cache SATA 6.0Gb/s 2.5" Internal Notebook Hard Drive Bare Drive

I was hoping to RMA it but seeing as how it's well over 5 months since I ordered it, they can't take it back. Might as well go straight to the manufacturer and complain.