Originally Posted by
gfunkdave
It sounds like the wifi cards in your refurb Dell laptops are bad. Or they have old drivers that are causing issues. Be sure to install the most up-to-date drivers from support.dell.com.
Now you mention it... About 18 months ago, I had a Dell laptop provided by a client I was working for. It all worked fine initially.
After a Windows 10 update, the Wifi starting give a very similar (if not identical) issues to that which the OP is facing.
After a lot of trial and error, I noticed that the Wifi driver had updated as part of the Windows update. I rolled it back to the previous version, and all was well! So, the newest driver was actually causing the issue.
So, it's worth trying newer and older drivers.