Can't Ping by Hostname

I have a ATT UVERSE router, and a TP-Link TL-WA801ND access point connected to it.  

I have a server 2008 running behind the ATT UVERSE LAN with a static IP.  When my laptop is  connected to the ATT UVERsE over wifi I can ping the server by IP and hostname.  

When I am connected behind the TP-Link I can ping by IP, but not hostname. I need to be able to connect by hostname, because of the database I am using....

The funny thing is that it worked before, and now it doesn't.  I tried resetting the AP to factory default, and setup again, but it still doesnt work.

Any ideas?
tike55Asked:
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Paul MacDonaldConnect With a Mentor Director, Information SystemsCommented:
This is a DNS issue.  What device provides DNS on your network?  

Does your laptop get its IP configuration from DHCP or is it static?  

If DHCP, can you verify your IP information when name resolution doesn't work (post the results of IPCONFIG/ALL)?
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tike55Author Commented:
Once I changed network from home to work on my laptop, hostnames worked.
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Paul MacDonaldDirector, Information SystemsCommented:
Great!  Happy to help.
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