Trojan.patchep!sys will not go away

3 days ago I was scanning my computer with Norton anti-virus and Malwarebytes. Both programs found a few trojans (gen.2 and a few others) and per following the directions I cleaned those out and re-ran both programs to be sure it was cleaned.

On the second run they both found Trojan.patchep!sys and again I had the programs do what they could to clean it. Ran the programs a 3rd time and they both said the computer was clean and did not detect the Trojan.patchep!sys. Since then I have run Norton Anti-Virus and Malwarebytes every night and last night they found the Trojan.patchep!sys again. Please help me get rid of this bug permanently!

 

I have Windows 7 Professional 64-bit.

Yes I have a flash drive

I have downloaded the 64 bit version from http://www.bleepingcomputer.com/download/farbar-re​covery-scan-tool/  onto the flash drive.

I did not proceed any farther as that could interfere with further instructions.

 

Please let me know what I can do next. Thank you for your time and help.