I do the usual defrag and disc clean up. But I want to do a serious clear out as my computer is really slowing down now. (3 years old). It gurgles after boot up for about 2-3 minutes, where do I find unnessary boot up files that arent needed. My computer really slowed down after downloading Norton even though Ive got rid of it now its never really recovered.

any advice appreciated to save £50 for a man to come out

__________________