1 Copper

RE: I cannot install wifi and bluetooth drivers for my laptop. (dell inspiron 3521)

I have dell inspiron 3521 and wifi sign was  not showing in it. But when i shake it then it start working. After some hours it again stops, it happened many times from a month. finally it stops .    

so I tried  to install Bluetooth and WIFI driver  and facing issue which given below in image: 

Please help me.