BSOD and can't restore

Hi All,
I installed Windows 7 Professional (64bit) last week and all was fine until this morning when I got a BSOD when booting up. I tried "Last know good configuration" to no avail and Windows wasn't able to repair using the startup disk and I can't use system restore because the box for the "C" drive is unchecked and grayed out and says "you must enable system protection on this drive" and and that's as far as I can get.
Do I need to somehow preload SATA divers to use system restore? I'm stuck and would appreciate your help.
The last thing I did before all this happened was use Quicksys RegDefrag 2.1 after creating a system restore point and then shut down the computer for the night.

Thanks..........Tom

How can I get the Dump File if I can't boot the computer?

Hi Tews,
Thank you for your replies. The weird thing is Win 7 is seeing my "C" drive as "E" for some unknown reason and that's apparently why the system restore box is grayed out. I am forced to do a clean install on an unused 50GB partition on the drive. If I can do any forensics when I get that bootable and perhaps repair the original partition ( I was saving this one for Ubuntu) I would appreciate your input.

Thank you again.....Tom

Reinstalled on different partition and all is well.
Thank you again for your help.

Tom