I've just replaced my 9 year old hard drive with a brand new one and installed windows on it, but now Windows seems to be having issues - quite often when I try to do something simple like running a program or accessing some feature it "pauses", becomming completely unresponsive for a few seconds. Basically it's like tiny freezes.
Windows also seems to be generally slower than before as well.
Could a problem with the new hard drive be causing that, or just a bad windows install perhaps?