compatibility problem between Huawei and win7

I am using window 7 ultimate on my dell notebook. I just purchased broadband data card of Huawei from tata indicom. The system get hanged after using it for 5 to 15 minutes and respond only on doing system switch off.
Do we have any solution as the firm's technical person just waisted my time thrice for no result?

I had a similar problem, I disabled the Microsoft Virtual Wifi MiniPort Adaptor (its only needed if you want to connect to two wireless networks at once) and the problem never came back

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