Clean your machine with Privazer
Then defrag with.Ultimate Defrag.
Then I would suggest that you disable useless startups, all are really not needed, except your antivirus. When you disable items from startup, a reboot is needed to feel the changes. Whats In Startup.
After the reboot, tell me how things are running.
Then Download Security Check to your desktop, right click it run as administrator. When the program completes, the tool will automatically open a log file, please post that log here in your next post.
Please download MINITOOLBOX and run it.
Checkmark following boxes:
Reset FF proxy Settings
Reset Ie Proxy Settings
Report IE Proxy Settings
Report FF Proxy Settings
List content of Hosts
List IP configuration
List Winsock Entries
List last 10 Event Viewer log
List Installed Programs
List Users, Partitions and Memory size
List Devices (problems only)
Click Go and post the result.