Reply to Any tips on tweaking my acer?

Ok just did a clean install of win 7 ulitmate re insatlled traktor only and loaded my track collection, any pointers to how to tweak my system as i,m still getting the odd pop n crackle, i,m just about there and aching to get this working flawlesly and i,m going to use this as a traktor dedicated machine. I have tried gamebooster but that just totally messes with my system as it doesnt even see traktor? Any links or advice on my acer lappy as i bought it specially and the specs are more than enough. Also as a end note i have no firewall or anti virus installed this machine.

acer aspire 4935g
4gb ddr2, 320hd, intel duo T64000