You should provide screenshot of Access Control---Host to prove that... Besides, entering ‘google’ will set the rule to block any domain name that contains the word ‘google’... Follow this guide....

I noticed there are some similar threads. http://forum.tp-link.com/showthread.php?79992-TP-Link-C9-and-Samsung-Printer-via-WPS...

It sounds like username or password you entered is wrong... Did you check them with your ISP? C7 is V2? The firmware is up to date?

Go to Computer Management---Device Manager and check if the adapter is showing under Network Adapters or Other Devices. If you are not sure which one is yours, try to unplug it and plug it back to...

What's the operating system? Windows 7? Enable WLAN Autoconfig to see if it helps. http://www.tp-link.com/en/faq-306.html

No...As I know, it depends on chipset instead of driver of the wireless card...