Mac freezes after 10 minutes, hard drive and sata cable replaced

MaBook Pro froze about a month ago. Computer would get slow and then just stop responding. Wouldn't even respond to force quit commands. Press and hold power button only way to free it up.

Directory Scan, Volume Structure failed. Bad Blocks.

Purchased new hard drive (Western Digital Blue 320 GB Mobile Hard Drive: 2.5 Inch, 5400 RPM, SATA II, 8 MB Cache) and replaced. Try restore from time machine, fails - freezes up with about 20 minutes remaining to finish.

Got a USB SATA cable and new SATA cable for computer.

The drive and computer work fine when connected via USB. I replaced SATA cable in computer and tried drive internal - same problems. Still freezes after working for just a short while.

So to sum it up, new drive works via external USB but not when installed internally.

Any ideas what it could be? Did I buy the wrong drive? Do I have two bad SATA cables? Something else entirely?