An error occurred while updating the service file on the system for the service name db2c_DB2 with port 50000
When installing on Windows 7, just click ok on the error during installation, then you will need to add db2 services file as below:
DB2 9.2
C:\windows\system 32\drivers\etc\services
add db2c_db2 50000/TCP #DB2 services
DB2 8.2
C:winnt/system32/drivers/etc./services
Add --> DB2_DB2 50000/TCP
Save
Restart DB2