# Why my computer can't find the the GMS862 modem

**URL:** <https://community.sparkfun.com/t/why-my-computer-cant-find-the-the-gms862-modem/6625>\
**Category:** Development Boards\
**Created:** [March 3, 2008, 3:20am UTC](https://community.sparkfun.com/t/why-my-computer-cant-find-the-the-gms862-modem/6625 "2008-03-03T03:20:54Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![MontanaTrout](https://avatars.discourse-cdn.com/v4/letter/m/cab0a1/32.png) [@MontanaTrout](https://community.sparkfun.com/u/MontanaTrout)\
**Post date:** [March 3, 2008, 3:20am UTC](https://community.sparkfun.com/t/why-my-computer-cant-find-the-the-gms862-modem/6625/1 "2008-03-03T03:20:54Z")

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I got the rs232 sparfun gm862 eval borad. after plugin and power on, there is a green flash. I open the hyper terminal and set 8N1 9600. I type “AT” but “AT” not show on the hyper termnial. I removed the RS232 cable, I got the same result. Why I losed GM862 modem? Did I miss anything during the setup?

Thanks

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**Author:** ![falingtrea](https://avatars.discourse-cdn.com/v4/letter/f/f05b48/32.png) [@falingtrea](https://community.sparkfun.com/u/falingtrea)\
**Post date:** [March 3, 2008, 4:18am UTC](https://community.sparkfun.com/t/why-my-computer-cant-find-the-the-gms862-modem/6625/2 "2008-03-03T04:18:34Z")

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Some wireless modules will not respond because they are set up in hardware flow control mode. Try changing hyperterminal flow control.