Avast can never repair viruses are these safe to delete?

One of the viruses is causing a re direct when clicking on google links. The STEAM one seems to be a false positive. What about the others are they safe to delete or is my computer going to not reboot?

http://imgur.com/Glh6g

This images shows the screenshot from avast.

The first one is a Zero Access dropper file so you may have an infection causing the redirects

My question is how do I get rid of them without harming my PC? Because Avast doesn’t repair anything. Do I have to get another virus program? Or are they safe to delete?

quoteBecause Avast doesn't repair anything.
most malware files can not be repaired....only legit system files injected with malware code may be repaired

follw this guide and attach (not copy and paste) Malwarebytes / OTL / aswMBR logs
http://forum.avast.com/index.php?topic=53253.0

then essexboy will have a look inside tomorrow