Wireless keeps dropping after opening pc

I openened my desktop, and now usb wireless adapter keeps dropping connection every minute for about 5 seconds?

usb wireless adapter was working correctly before i oppened desktop.
it doesnt have to do anything with software.
is there something that i could have moved inside??
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More about wireless dropping opening
  1. Start simple. Check the external usb connection to the actual computer and make sure it's inserted fully. Next tell me if the adapter is plugged into the front of the PC or the back of the PC.

    If its plugged into the front you may have knocked loose the front I/O usb header on the motherboard.
  2. i tried on all 8 of my USB slots. same problem in all.

    ethernet works 100%
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