What should I do if my computer gets slower and slower? If you have money, you can upgrade your hardware; if not, you can try software solutions. Try defragmenting your hard drive. If you think the built-in XP defragmenter is too slow, you can use third-party software instead. Among these, 8"O" trusts Norton's disk defragmentation tool the most. You can also try the free version of Auslogics Disk Defrag.