Windows 8.1 Wireless with Realtek RTL8188CU USB wireless

I have two routers:
WRT54GL with standard Linksys firmware on 2.4GHz channel 9
Belkin Play Max / N600 HD F7D4301/F7D8301) v1 on 2.4GHz channel 2 (plus it has 5GHz active)
Using WPA2-Personal on both.

Both the routers seem to be working fine and I'm able to connect devices to them.

Except, a Windows 8.1 desktop with a Realtek RTL8188CU USB wireless interface:
WILL connect to the Linksys router wireless just fine
but it won't connect to the Belkin router wireless at all.
The passphrases are different but, as above, I can connect other devices to the Belkin wireless.

The Windows 8.1 "Set up a new connection or network"  / "Set up a new network" is supposed to show a list of wireless routers but it shows NOTHING even after giving it some time to populate the list (90 seconds is recommended).
So, it doesn't even show the one that works!

The purpose of the wireless interface is to test wireless routers.  This isn't a good situation.
LVL 27
Fred MarshallPrincipalAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

JohnBusiness Consultant (Owner)Commented:
My built-in Intel Wi-Fi card in my X230 Windows 8.1 laptop. works with any modern Wi-Fi router I have tried (Lots), so this is not a Windows 8.1 issue.

It is reasonably possible that that your USB card is not compatible with the Belkin router. That has happened before and is likely the reason here. Try a different USB wireless adapter.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Fred MarshallPrincipalAuthor Commented:
John:  Thanks!  That was it it seems...
JohnBusiness Consultant (Owner)Commented:
Thanks Fred and I was happy to help.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows 8

From novice to tech pro — start learning today.