Ok well work was slow so I played around. I am well versed in pc's BTW. Here are the steps I did and NOTHING was successful. There are serious bugs in Avast 5.
1. Uninstalled MSE and rebooted
2. Installed Avast 5 Free (version 5.0.396)
3. Installed fine but GUI says "Fix now" services not started
4. Click on "fix now" and nothing happens
5. Rebooted. Same problem.
6. Rebooted. Same problem.
7. Rebooted. Same problem.
8. Ran the repair tool for Avast and rebooted. Same problem.
9. Uninstalled Avast using the avast uninstaller and rebooted.
10. Installed Avast again and same problem.
11. Rebooted. Same problem.
12. Went into services and tried starting. Got error codes.
13. Rebooted. Same problem.
14. Uninstalled Avast 5 and installed Avast 4.8
15. Works like a charm. Avast 4.8 works.
16. Uninstalled Avast 4.8 with the avast uninstaller and rebooted.
17. Installed Avast 5 and problem is back.
18. Uninstalled Avast 5 with the avast uninstaller.
19. Installed AVG and AVG works. Uninstalled
20. Installed Avira Free and Avira Free works. Uninstalled.
21. Reinstalled MSE and my story has ended.
With all that said and done there is obvious problems with Avast 5.