Wifi Keeps getting Disconnected

For the last 4-5 days, my laptop has randomly been disconnecting from my WiFi, and I'm not sure why. I may be watching a video and then it randomly just disconnects. Every other device in my home is perfectly fine though, e.g. my phone is fine. The only way I can resolve it now is to restart my laptop which instantly fixes the problem, but I get disconnected again. It's not a problem with my router as I recently changed my ISP and the same thing keeps happening. I've tried troubleshooting and I've updated all my network drivers. What can I do? I have Dell Inspiron 15 5566 64 bit windows 10