MacBook will not connect to wifi connections.

I have a 2011 MacBook Pro that suddenly stopped connecting to any sort of wifi. Even on windows side, wifi is t working. No setting have been changed. No updates have recently occurred. I feel there is a hardware issue with the network card.
I have tried to connect to home wifi, mobile hotspot, as well as a friends wifi.
I am able to connect to Internet via Bluetooth network sharing only.
I receive a "Network timeout" message.
Any help would be appreciated.
Thanks!

Run a #3 Hardware Check
Reset #1 SMC and #2 PRAM
Step by Step to fix your Mac

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