Mstrkurt

Hey guys im sure you have alot of posts about computers being slow, however i have searched the forum for a solution but havent found one just yet, recently my computer has acted with very slow reaction times to my clicks, i sometimes have to click a window a few times for it to maxmise or minimise, ive run a whole system virus scan, run searches for adware,malware and spyware, and even a registry cleaner, but still no progress, it leaves me to think it must be something with the hardware however i am not sure how i can find that out, i have Everest (diagnostic software) so if you'd like me to report something from there, please reply :)

any help is appreciated,
Thanks