VS2013 intellisense code completion

Question

First I thought it was a problem of VS2013 RC/beta but now I installed VS2013 RTM and still have the same problem: code completion does only open after I execute it manually

Answer 1

Method 1

1. List item
2. Tools -> Options
3. Text Editor -> C# -> Intellisense
4. Ensure "Show completion list after a character is typed" is checked

Method 2(for me after uninstall resharper)

1. List item
2. Open VS2013
3. Tools -> Import and Export settings
4. Reset all settings
5. General/Your prefer language(like Visual C#)