My PC is running like I'm on dial-up in 1997. Virus assumed..

Hey guys,
I’m a noob here so feel free to correct me should I make any mistakes, I’m always about being respectful to people who give so freely of their time. Reader’s Digest version…My PC is a Gateway Win Home Premium 7 64 bit 4 gigs of RAM AMD Anthlon II x 2 with 2.80 Ghz. My C drive is 238 gb free of 687 gb. I don’t “game” on it or use graphic intensive proggies. It’s running fine in windows and even on AOL (I know you all hate AOL but I can’t find my way around on Firefox or Chrome), but on Explorer, once I start browsing or opening a second window, it sounds like an F16 Jet Fighter, and it locks up, my mouse will become unresponsive and I get error messages asking me if I want to reload or quit out. It’s running horribly. I’m not a total wingnut, I ran every antivirus, antimalware and antispyware at it known to man and it found a few things, but mostly innocuous tracking cookies. For the record, I did install and uninstall all the antivirus proggies after use, so it’s not conflicting antivirus issues. If you’d kindly direct me to any reports you need or steps I might take would be so appreciated. I am permanently disabled, got run down by a postal truck on my Ninja, so sitting at my desktop for hours trying to solve this is basically torture, I’m so grateful for your time…

Attach your basic diagnostic logs. (MBAM, FRST and aswMBR)
Instructions: https://forum.avast.com/index.php?topic=53253