threats detected

help please,back from holiday,and computer not running right.on doing a scan,it found two threats,could you please tell me how to remove ,the treats
thank you for any help

Welcome to the forum.
More information would be helpful.
What operating system ??? what version of avast! ??? what other security software
is or was installed ???
What is the information on the threats ??? Name and path where it was found.

Safest action is always to put the threat into the virus chest,