Any activity which I was performing like updating system, updating lists, creating new document was stamping system account instead of “Tariq Younas”
Reason: While installation if you will use your account, it will be used to create SharePoint db. At that time you account will be marked as system account.
If you face such type of problem then use stsadm utility and run this command
stsadm -o updatefarmcredentials -identitytype NetworkService
After running command restart your IIS
2- Write “inetmgr” and press OK
3- Here under application pools, select your application pool and right click
4- On identity tab select radio “predefined” Network service
This will not occur again.