Hardware Drivers :: Downloaded And Installed - WiFi Still Not Working

I recently bought an Acer Aspire E laptop but accidentally damaged the hard drive a few months later and had to replace it. My friend knows a lot about computers and has a side business fixing them and works as tech support for a company and for his university, so he installed the new hard drive for me and downloaded most of the drivers and installed them and said he would get the wireless working later. He eventually came back a few days ago to finish it up and after he left, I realized the wifi STILL was not working.

I have an ethernet cable and the thing it plugs into here in my dorm room, and the wifi works fine when connected to an ethernet, but Christmas break starts in a few days and I have no way to connect with my ethernet cable at home. I have my old laptop that I'm currently using but it's shitty and it doesn't turn on unless it's connected to the power cord so I can't really take it anywhere.

I've tried redownloading and installing all of the drivers myself but it doesn't do anything at all and I don't know enough about computers to figure it out. I did see that there is a yellow triangle next to the network controller driver so I'm assuming it probably has something to do with that being missing.