My computer has been running really slow. It seems to be the worst when I start it up, and it slowly goes a tad bit faster through out the day. I have ran everything I have to try to see what it is. I've ran Spybot, Disk cleanup, Defrag, CC Cleaner, Malewarebytes, Super Anti Spyware and AVG. Ran them in safe mode, none of them found anything. So I tried TDSSkiller, as I have had a Root Kit before. It found nothing. I've tried using a system restore point, didn't help. My Windows Security updates don't seem to be working as well. I tried telling it to install the newest updates, it acts like its going to.. but never does.
So, I am at my wits end. Completely confused and would love some help.
I am using Windows XP if that helps any and My default browser is Google Chrome. I don't dare try to use Firefox anymore, it seems really slow.