I had a laptop with a bad network card. Didn’t want to go through all the hassle of installing a new one so I bought a usb wifi dongle instead. When I first inserted it, the signal strength was horrible and connection was intermittent. Then I found an online solution to install a driver for it. I simply followed the steps and now it is working better than expected. Just wanted to share with you guys in case someone is going through the same problem I was. Here is the link to wifi dongle and driver:
Search for this on amazon: TP-LINK TL-WN725N Wireless N Nano USB Adapter 150Mbps