HOW LATE ...? try ... install software Registry cleaner , disable not important data, delete all temporary file *.tmp, disable automatic update, disable auto scan anti virus ...
if WANT FASTER : get New SODIMM with more Size according support your Laptop
backup important data, make recovery system + keep driver , clean your Laptop , call professional after that install fresh OS + Driver
IF WANT FAST : GET NEWEST Laptop use Core i7 2600