hi, I was asked to replace a screen on my sons toshiba c660,which a did, after testing the laptop I noticed it was incredible slow I asked him why it was so slow and he said it had always been that slow since he purchased it from Argos 10 months ago ( it's his first laptop and he is not very computer savvy) anyway I ran an anti-virus scan and spyware scan and nothing was found so I decided to do a factory reset (f8)but the problem is still there, my other son who lives with me as the same laptop ( only difference his is a pro) and difference between then like night and day, I notice that the physical memory is always on about 93% with nothing running in task manager and his fan keeps coming on every minute or so, any suggestions regards D