I ran Progrrame compitibility troubleshooter & below mentioned is the report
Troubleshooting report
sqlservr is incompatible. Detected
Fix application sqlservr Completed
Provides steps to fix the incompatible program.
Compatibility Mode
Compabitiliy modes applied:
User verification: Fix didn't work
Collection information
Computer Name:DELLSERVER2
Windows Version:6.2
Architecture:x64
Time:Compatibility Mode
Compabitiliy modes applied:
User verification: Fix didn't work
Even .net framework was upgraded to 4.0