I have reserved specific IPs for each computer on the router.
John
You would be better off with DHCP, I think. I stopped using workstation static IP a couple of decades ago.
The router could have gotten mixed up and therein your issue. Make one computer DHCP and see.
hypercube
As I suggested earlier, use DHCP and work through the computers one at a time.
I did not anticipate that you had set up reserved IP addresses on the router DHCP.
While that's fine, I would strongly suggest you forego that nicety while troubleshooting this issue.
On one problem computer reset TCP/IP, restart and test
Open cmd.exe with Run as Administrator
Then netsh int ip reset c:\resetlog.txt
Restart the computer
Remake wireless profiles as needed
Also, ipconfig /flushdns followed by net stop dnscache followed by net start dnscache