Hi, I recently had my hard drive crash in my HP Pavilion dv7. I bought a new hard drive after that and tried to clean install Windows 7 Home 64 Bit. The installation was not able to format the hard drive. I tried to format the drive on my desktop. That was unsuccessful so I tried to use Ubuntu to format the drive. That did not work, also. I tried the XP disk, and that could not format the drive. Remember, this is an new drive, and it does work.