dont know how I can run it when avast telling me its a virus/malware other than to stop avast. and I'm not going to take a chance on that program being infected and make more trouble than I have now.
What program do you mean? MBAM?
It will not be infected.
It is a popular and competent demand scanner.
What I would suggest is: Once MBAM has been installed and updated, go offline, then disable Avast then run the MBAM scan. At the completion of the scan it will generate a log. Select everything found, then select "remove selected". (This quarantines those items.)
If MBAM prompts for a reboot to finish cleaning anything, do so promptly.
After restart, check that Avast is enabled, go online, post the MBAM scan report.
This behaviour is more typical of malware than a broken AV program.
What version of Avast do you use?