Was on web site when screen froze. I turned off

If you mean COMPUTER (not hard drive), then it could be bad RAM.

If you actually mean hard drive, then WTF did you do to the thing???

i would firstly disconnect from the net and delete the temp memory .
after that run a scan on your computer as your PC is infected and even with a virus protection infection do happen .
run the scan , make sure you have an up to date virus protection .
try also to press the following keys :
control , alt and delete in that order and see the task manager appearing .
have a good look at what is running which will give you an indication to what is running program wise .
if your PC does not run at all you have a more serious problem .
you may have to make sure that all your connections are ok ,
without knowing how and what happen i can only make up that your PC has crached the only fan running is the cooling fan for your power supply .