What do I do with Root-kit: hidden file??

My computer has 879 infected files with rootkit hidden file, high severity…I don’t know what to do, I’m a noob with all this…If anyone coul tell me what to do I would appreciated. I run a full scan and found that, I couldn’t move them to the chest and I don’t know if delete is a good idea…anyone than can help me?

can you post the log or attach a screenshot so we can see?

attach the requested logs http://forum.avast.com/index.php?topic=53253.0

AdwCleaner
Malwarebytes
OTL
aswMBR

when done a removal expert will be notified and help you