|"I have Norton to check for viruses but Norton shows I am clean"|
Dos'nt mean you are, the badies are always ahead of the goodies.
Try both of these, you may have to use Safe mode.
Using ESET's Online Scanner
General clean up and Prep (Do prior to any AV scans)
How can I view the log file from ESET Online Scanner?
The ESET Online Scanner saves a log file after running, which can be examined or sent in to ESET for further analysis. The path to the log file is "C:\Program Files\EsetOnlineScanner\log.txt". You can view this file by navigating to the directory and double-clicking on it in Windows Explorer, or by copying and pasting the path specification above (including the quotation marks) into the Start ? Run dialog box from the Start Menu on the desktop.
Common Issues, Questions, and their Solutions, Frequently Asked Questions.
VIPRE Rescue Program
Try it in Safe mode.
If it won't run, rename the downloaded mbam-setup.exe file to mb.exe to help work around certain malware that will block it from being run.
If it still will not run.
1: Go to Control Panel > Programs and Features and uninstall Malwarebytes.
Next redownload Malwarebytes but rename it before you download it to your desktop. As you are in the process of downloading when you get to the point that the "enter name of file to save to" box appears, in the "filename" slot, rename mbam-setup.exe to something.exe, then click Save.
If it installed but will not run, navigate to this folder:
2: C:\Programs Files\Malwarebytes' AntiMalware
At the top of the page, Tools > Folder Options > View, click > Show hidden files and folders and untick > Hide extensions for known file types.
How to see hidden files in Windows
Rename all the .exe files in the Malwarebytes' Anti-Malware folder and try to run it again.
When it opens, update 1st.
If it won't update after installing, update manually.
Download & install.