Cannot start service W3SVC on computer '.'

Go to Task Manager --> Processes and manually stop the W3SVC process. After doing this the process should start normally when restarting IIS

I found the solution:

1. Run -> appwiz.cpl -> Turn windows features on or off -> Uncheck "Internet Information Services" and "Windows Process Activation Service"

2. Restart your machine.

3. Run -> appwiz.cpl -> install both "Internet Information Services" and "Windows Process Activation Service"

Reference

I came across the same problem. It got solved with following steps:

1. Go to admin DOS command prompt --
2. (Ctrl+X) will give the option to go to admin DOS prompt
3. use command "iisreset"

This will solve the problem.