UI FAIL TO LOAD

Avast Free Antivirus / Premium Security
1

what should I do

2

Repair Avast:

  1. Control Panel → Add/Remove programs → Avast
  2. Click on ‘Repair’.
  3. Follow instructions.
  4. Reboot.
3

What OS/XP ?
What exact version of avast ?
Any other security (related) software installed ? (or was there)

4

How to Successfully Install Avast: http://goo.gl/VLXde

5

That would do anything if the OP is using XP and the terminal services don’t run.