Hi guys/gals, 18 month old PC with decent spec (for what I'm doing...one market, no tick charts, 3-9 charts open at a time etc) seems to be grinding to a halt. Ridiculous delay in opening applications and general response time. I've tried going to a technician and he cleaned the machine for me, re-installed everything and that improved things for several months but now it's worse than ever! I have limited knowledge where computers are concerned and I'm just wondering what the best route is to take. Not interested in just buying a new PC just yet but would rather learn some best practice to get the most out of what I've got. Any advice?? PS CPU fan recently became stuck on 100% (ie noisey!) which I'm now manually controlling using SpeedFan.