Wsindows 8

Hi Windows 8 on my new pc. Installed Avast. It picks up a threat every few seconds. I have to do a boot scan every day. Am I doing something wrong?

this indicate that you have a infection…

follow instructions here … read it all before you start https://forum.avast.com/index.php?topic=53253.0
attach Malwarebytes / Farbar Recovery scan tool / aswMBR logs

when done, removal experts will be notified and assist you