Same here dougalface.
I've been having problems with the speed of my PC too.
It's been going at snails pace recently.I bet I could make a cup of tea by the time my PC can finish loading something up.
I have even Defragmented it,and ran a full system scan using Norton and Malwarebytes Anti-Malware.
Seems there is nothing wrong with my PC,as no viruses were reported.
Wouldn't it be nice if there was a GO FASTER button on computers these days.That would be terrific!!
Nevertheless I have tried Whickerman's website link above.I'm now going to find out if it has worked.