Try this trick to add up ur name in place of AM and PM beside time
Its simple
Step-1:- Navigate to -> Start -> 
Control Pannel -> 
Regional and Language Option ->
Click on Customize-> Go to TIME Tab ->

Change AM symbol and PM symbol from AM and PM to ur name -> Apply -> Ok ...

Did It change? 
If not, follow step-2 below.
Step2:- Now go to time in taskbar and Double Click it toopen "Date and time property" ...
Look place where time changes in digitalform i.e. 02:47:52 AM , click to arrow to cnage the AM or PM by selecting and press arrow. 
It will Show ur name or name that was entered by you 
Apply ->