My computer is suddenly operating quite slowly. I
1) Download and install a programme called Ccleaner from Filehippo.com.
a) Run the cleaner, gets all the web related rubbish off your pc you didn't know you had.
b) Select the "Tools" option from the left hand side of the Ccleaner window, click on startup, and delete al the startup items listed except for anti-virus software and firewalls. This means that you will have to actually start a programme you need from a short cut or programmes instead of running them all, all of the time.
2) Disconnect the tower, take off the outer case and, with a real bristle paint brush and hoover, carefully remove all the dust and fluff from inside. (If the CPU gets hot it starts to step down in performance speed) Clearing all the vents and the heat dispersal vents over the CPU and CPU fans, helps to avoid this.
3) FInally, when you're licence has run out, dump Norton, it slows pc's down. Download and install (From filehippo.com) AVG (antivirus) SPYBOT search and destroy (Malware) and If you're using windows, Window defender. They're all free.
4) If you wish to speed up further, its a case of adding more RAM, to do that, first go to the Crucial web site, enter the details of your pc and it will tell you how much you can put in your pc and what type, bear in mind if you're running XP, the most it can support is 3 GB of ram. You don't have to buy it from them, but the info is very useful.