Hi Mohd,
disp+work.exe is the NetWeaver ABAP kernel on OS level.
So it has nothing to to with this ERP logistics forum :-)
As SAP Basis is also my profession ... ;-) ...
The message with the profile is ok, because no non basis guy will ever call disp+wok on OS level directly. You may use disp+work -v to get a patch history, that's it.
You can start the SAP instance by OS command startsap or within the Microsoft Management Console (MMC) snapin from SAP.
Please find docs according to ...
SAP-NetWeaver- Starting/Stopping
Good luck,
Matthias