Looks like you have a very old avast version, whilst it may not be avast 5 as any program update from the avast user interface would retain the old Alwil Software company name and folder names.
You could try an avast Repair > Control Panel > Add Remove Programs > select Avast free antivirus and click Change/Remove - From the next window scroll down to the Repair option and select that.
This may not work, given that your second image is saying you may need to reinstall.