Windows 7: avast: winsxs rootkit detected. help?

The other day my computer started acting very strange, i knew i caught a virus somewhere just not sure where. I decided to go the simple way and just reformat.
After the format and all the updates applied i found my PC ran very poorly. Did a scan with avast! free and found this:





Then avast! froze before i could do anything else. Restarted and now it says "access denied"??
What should i do? I was about to format again but decided to ask here before as my comp seems to be running fine for now.

Download Malwarebytes. Reboot in safe mode and run it

Please download the free version of Malwarebytes.
Update it immediately.
Do a full system scan
Let us know the results at the end.

Malwarebytes : Download free malware, virus and spyware tools to get your computer back in shape!

Use Hitman Pro (better rootkit detection than MBAM): Home - SurfRight

Since Avast did that I'd do another Clean Install, just to be sure things are right.

Clean Install Windows 7 - Windows 7 Forums

Well I prefer he first tries my suggestion and the one from zigzag3143

As do I and either should do the trick.

It seems Malwarebytes didnt find anything


Malwarebytes Anti-Malware 1.60.1.1000
Malwarebytes : Free anti-malware, anti-virus and spyware removal download

Database version: v2012.03.02.04

Windows 7 Service Pack 1 x64 NTFS
Internet Explorer 8.0.7601.17514
IonicRipper :: MOTHERSHIP [administrator]

02/03/2012 2:55:42 PM
mbam-log-2012-03-02 (14-55-42).txt

Scan type: Full scan
Scan options enabled: Memory | Startup | Registry | File System | Heuristics/Extra | Heuristics/Shuriken | PUP | PUM
Scan options disabled: P2P
Objects scanned: 456884
Time elapsed: 46 minute(s), 34 second(s)

Memory Processes Detected: 0
(No malicious items detected)

Memory Modules Detected: 0
(No malicious items detected)

Registry Keys Detected: 0
(No malicious items detected)

Registry Values Detected: 0
(No malicious items detected)

Registry Data Items Detected: 0
(No malicious items detected)

Folders Detected: 0
(No malicious items detected)

Files Detected: 0
(No malicious items detected)

(end)

Should i give Hitman a try or will the results be the same?

YESS ! try hitman

No luck with Hitman Pro.

I think im gonna do a clean install of Windows 7 then.

Good idea