hey someone will check thoose logs and give you further instruction. but a little more information would be good so we could help you better.

what os you using?

what avast version you running?

i suggest do a scan with malwarebytes antimalware as a first opion

and a boot scan with avast would hurt.

http://www.filehippo.com/download_malwarebytes_anti_malware/

download install update and do a scan and don’t forget to remove what it finds. plus a system reboot might be necessary.

instruction how to do a boot scan you find here:

http://www.schmahl.net/avastbootscan.php

good luck and lets us know on the progress.