and welcome to BleepingComputer
Although the computer is running slowly, it does not necessarily mean that there is still malware present on your system. Take a look at the following link:Slow Computer/browser? Check Here First; It May Not Be Malware
Try all of the steps outlined there, before posting your HijackThis log aftewards using the link provided if you experience no change in performance. Make sure you use our HijackThis Log and Analysis Forum
for your logfile. After posting a log you should NOT
make further changes to your computer except those that are advised by a member of the HijackThis Team; doing so can cause system changes that may not be visible in your log. Please be patient whilst waiting for a response, our HJT Team is currently very busy, and as we try to deal with logs on a "first come first served" basis, you may have to wait a short while.