If you have microsoft, then all you need is most likely on your computer. It sounds like you need a virus scan, and a disk defrag which will help with your slowness problems.
Fixing the virus problem:
1, Check to see if you have "Windows Defender" on your computer. Its just as good as any other Anti-virus program and it doesn't hassle you about renewing you're subscription 6 month in advance.
If you happen to not have it installed you can download it for free. http://www.microsoft.com/en-us/download … tails.aspx
2, Once you download it, it might have some updates and what not, then i trust you can figure out how to scan your computer. It's pretty explanatory once you open it.
Fixing your slowness problem:
1, What you most likely need is a disk defrag. left click your home or start menu for windows, in the search, type "disk defrag" and you should see something that looks like "disk defragmenter" or so. If you don't have it or a program that does more or less of the same, i'd find a usable version for Auslogistics defrager.
2, once you have got that last part settled, start your defrag.
If you are afraid that it's going to delete your "personal" files or your porn, don't be, all it does is get rid of useless files. I don't know how it works, but it does so i don't ask questions.
3, afterward, i'd suggest you restart your computer.
