Finally i had solve the issue of Micromax MMX353G USB Modem "No Device found in Windows8/8.1" by this simple steps.
1)Before install open the setup file(all the .exe files)-->right click-->properties-->compatibility-->enable 'run this program in compatibility mode'-->select Windows 7
2)Install the MMX353G software,it shows Install Drivers...FAIL! and promote you to Restart your PC.
3)Restart and ensure the MMX353G icon in the desktop is in compatibility mode(already it should be in compatibility mode after installing)
4)And go to the c:\program files(x86)\MMX353G 3G USB MANAGER\driver\Win7_64\
here you find the following files and do the following methods.
i) cmnsmdm-->right click->install--->ok
ii) cmnsser-->right click-->install-->ok
5)Thats all...run the program you will find that network is searching and Available.
100% tested
Enjoy Friends...