Clean your registry.
I had same problem after running program called Registry First Aid my speed improved. It may help you tooo…
http://www.rosecitysoftware.com/Reg1Aid/index.html
Note that program is not free but it is shareware program. From site, "Tired of Windows® crashing? Sick of having software lock up on you or taking forever to load? The problem could be all of those incorrect registry entries caused by software installations and un-installations that went awry!
Not all software un-installations do a complete job leaving behind numerous nagging file references in the Windows registry pointing to files that no longer exist. In time, you can end up with hundreds of these files that may slow down your computer and cause software to lock up, requiring a hard reboot of your computer. "
I Highly recommend it to anyone
