I bought a Seagate Momentus Hybrid HD 500G for my Toshiba A660. At first I was doing a clean install of Windows 7 64 Professional, and it seemed to be working up to the point where you choose which drive to Install the system on. I clicked on the unpartitioned drive and then I waited.....and waited ... and waited, nothing happening except the rotating circle indicating the system was doing something. after 20 minutes still no further than this point, so i hard rebooted, and then my Toshiba dosent even start, I get past the Toshiba Bios Screen then it stays on the cursor blinking top left screen, and nothing further, It wont even let me enter bios setup, it hangs forever. Everythings back to normal when i reinstall my previous hard drive, I read elsewhere there was problems with this drive, but some people managed to get it to work, can anyone elaborate or give me some tips on how to fix this, or should I just return it to the store, and get my $155 back?