Dell 7577 randomly hide wifi driver at device manager

im using Dell 7577 intel dual ac 8265 wifi, latest windows update and latest wifi driver

at 1st, i was using my laptop like a charm. after few hours of using, it randomly disconnects to my wifi and the wifi driver hide itself in my device manager. when i look into its properties it says HARDWARE NOT CONNECTED. so i restarted my laptop. and it worked again. i already called a dell agent here in my country, she remotely troubleshoot my concern but she doesnot fix my problem.she also asked me to update my windows, reinsert my wifi card, but STILL that does not resolve my problem. im currently using ethernet port.

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