Computer Help

I'm not computer illiterate, but I can't build a computer from scratch, I'm somewhere in between. I have a Dell laptop that I'm having an issue with as of three days ago. I keep losing my internet connection. My DSL router is working fine with my desktop and tablet. After much diagnosis, I have determined that the problem is when I tilt the screen past 90 degrees. Open it any further, and the laptop won't even detect my router. Move the lid to where the angle is less than 90 degrees, my connection returns. When I get a signal, shaking the laptop or tapping on it hard won't make me lose the wifi signal. My first thought is that I have a loose antenna wire connected to my wireless card. Took the laptop apart. Both antenna wires seemed to be connected, I disconnected them, removed the screw that holds the network card down, removed the card, re-seated it, screwed it down, reattached the antenna wires (hardest part, the connection is soooo small), put the laptop back together, no fixxy. Then I thought maybe something is telling the card to shutdown as if I was closing the lid, so I unchecked the option in Device Manager/Network Adapters/Intel Dual Band Wireless-AC 3160/Power Management to "allow the computer to turn off this device to save power". No worky. For the heck of it, I went ahead and downloaded the most current drivers for the card, no fixxy. I'm baffled. The diagnostic software says the network card is working perfectly, even when it's not getting a connection to the router. It's as if it's just not receiving a signal. I can place the laptop right next to the router and it still won't get a signal if the lid is opened past 90 degrees. No issues when connected with an ethernet cable. It took three days to figure out the issue is related to the angle of the lid. I have a bluetooth mouse, no issues with connection, just wifi.

@nbrowser