Explorer.exe corrupted or infected by virus

When loading windows, after welcome screen, nothing shows up.
First of all, it is recommended to perform full scan on infected HDD, you can do it connecting the Hd to another computer then do the scanning.

1. Use a virtual disk to access the infected partition, search for any file called explorer.exe and remove all of them.
2. Restart the computer in normal mode, open task manager, go to c:\windows folder, find explorer.exe and rename it. (example: lapiz.exe)
3. Open registry, goto HKLM\software\microsoft\windowsnt\winlogon. Highlight winlogon and identify on the right pane: shell, right click modify, enter lapiz.exe (as in the example)
4. Close registry, then restart the computer.
That should do it