Issue about wireless network

May 17, 2018
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Hey. I've bought a 802.11n wifi adapter and installed its driver. But it won't show the network firstly. But after some time it showed the network and connected. But this problem exists that when I open my pc, then it won't show any wireless network for sometime approx 1 hour, and after that it suddenly found the network
Plzzzz help to get out of this issue.
I'm very irritated with this problem.
My Pc is intel, Windows 7 SP 1

Plzzz give me the answer
Thank you.