Try to open the BSNL Logo with right click and select the option of compatibility troubleshouter. It test the program with wndows XP (Service Pack 3) and when the program works save the settings. Next time it will use the settings.
and also very surprising that when I have contacted the manufacturer for help they told me presently it wont work on windows 8 and I have to install win 7 or below. and presently their R&D is going on for WIN 8 .
I need to ask u that can BSNL 3G Data card LW272 can be use for other SIM besides BSNL, I got so many option on web but the solution they have offered didn't work ( Especially making Engineer col. to ZERO in regdit)