Unable to install ADSL MODEM USB DRIVER

Me Purchased an ADSL MODEM from BSNL during my BROADBAND Connection. Me installed USB driver from the CD(got a driver cd from bsnl-conatains s/w for ADSL MODEM C2110-SIEMENS) and connected modem to the system through USB.And everything worked for me. ONEDAY, I JUST UNINSTALLED MY DSL MODEM DRIVER AND TRIED TO REINSTALL IT.SUDDENLY DUE TO POWER FAILURE MY INSTALLTION STOPPED IN THE MIDDLE. NOW, THE PROBLEM IS THAT WHEN I AM TRYING TO REINSTALL the driver using MY COMPUTER->PROPERTIES->HARDWARE->device manager I AM GETTING MESSAGE "windows could not load the installer for GsiClass.Contact your hardware vendor for assistance." But when I am trying to install the software directly from the Driver CD i am getting a message "the DSL modem is already installed.To upgrade the software,you must remove the current software and then run Setup again later". I tried to remove the values from registry,repaired XP installation etc. but nothing helped me. i think the problem is with that GsiClass. So till date i am unable to use the USB for connecting modem to system.But i am able to connect the modem to system through ethernet port. So the modem is OK.and i can use the broadband connection. can anyone suggest me a solution to install the USB driver again.Please help me to solve the problem.

members/akhilchandran/ Welcome to broadbandforum.co I tried to remove the values from registry,repaired XP installation etc. but nothing helped me.
Hope , you knew what you were doing !
Uninstall usb drivers.
Remove modem from computer.
Insert CD and copy usb drivers to say C:/usb drivers.
Connect cable from modem to computer USB port. Restart. Let windows detect new Hardware. and ask for software.
Follow procedure.
Do not connect USB cable and LAN cable to the SAME computer:
use only one at a time.
give feedback.
REF:C2110 ADSL MODEM (Type-A) MENU
http://www.calcuttatelephones.com/dataoneinstall/c2110_driver.zip

if you have it working well via LAN why configure USB?

Hi, I am having exactly the same problem. If you have received any solution, please let me know also. Thank you.

try after copying the content of cd on disk right click installer and check competiability and check compatibility mode window 98

Hi, I tried both, copying to HDD, and compatibility wizard win98, no use. Same message as complained by akhilchandran. May be I have to format and reinstall the OS. Can somebody help?😛leasehelp

search for *gsi* in search including hidden and system files and delete those temp files