I would not suggest you kill it or permanently stop it - you want to figure out what the problem is and fix it!
It is good that you have PE and can post screenshots though!
Perform some scans for malicious software, then fix any remaining issues:
Download, install, update and do a full scan with these free malware
Malwarebytes (MBAM): http://malwarebytes.org/
SUPERAntiSpyware: (SAS): http://www.superantispyware.com/
They can be uninstalled later if desired.
To eliminate questions and guessing, please provide additional information about your system.
Click Start, Run and in the box enter:
Click OK, and when the System Summary info appears, click Edit, Select All, Copy and then paste the information back here.
There will be some personal information (like System Name and User Name), and whatever appears to be private information to you, just delete it from the pasted information.