First, if you want help on a BSOD error, you need to follow the posting instructions for BSOD errors found at http://www.sevenforums.com/crashes-d...tructions.html
. The memory dump would have the information we need to help you. Without it, there's not much we can do.
Secondly, on every BSOD, there is an error number. It's usually found on the left side of the BSOD, towards the bottom, and it's usually written like "Error number = 0x0000096". That error number is important, because it's the thing that tells you why the BSOD appeared. It tells you what's wrong.
For your other problem of sluggishness, try deleting the Temporary Internet files and delete the files from your temporary folders. Then restart Windows and see if it works better.