Halvizzle .. Welcome to ROG.
Cleaning is a real good idea. Compressed air and a vacuum is what I would use.
[it has been brought up that vacuum could be a 'static nightmare' .. but I don't see it.]
There are videos on YouTube for getting serious and taking it apart if you take a notion.
It could be time for a good cleaning and re-pasting -- do you watch the temps ?
If you have had the computer 'for years' and haven't done a refresh of the OS, this would be
a great idea as well .. as it is probably loaded with all kinds of junk.
If this is distasteful to you there are a few easy 'clean ups' you could consider.
1.MsConfig-Startup tab-uncheck Everything that isn't absolutely essential.
2.Windows/Temp-- ctrl+A - delete
3.First you have to be able to see these:so go to
[windows explorer-organize(win7)-folders and search options-view-check, show hidden folders,files,drives-close.]
close and re open windows explorer-C:\Users\(your user name)\AppData\Local\Temp- inside folder ctrl+A- delete- close.
restart and see if this does any good. Nothing beats a fresh OS though.
Best of Luck. Keep us 'posted'.c.