Steam errors.

[Aresty]

So, Steam is fucking my computer up. As soon as I execute it, my internet slows down and my computer starts freezing. If I close Steam, everything goes back to normal. I tried to reinstall it without deleting the steamapps folder, but I had no results. I removed clientbob, yet no results.
I'm a bit out of ideas here, help ?

[Roy]

sounds like registry with steam
Use CCleaner  and it should fix it
If not run the defrag local Cache on all your games just to be sure

[Aresty]

Well I moved steamapps and steam restared working.. but reinstalling 80 GB's of games seems a bit too much

[Roy]

try use ccleaner

[Aresty]

I did. But nothing much