Check you have installed the driver succcessfully or not. http://www.tp-link.com/en/faq-284.html If not, shut down firewall and uninstall anti-virus software if any, then reinstall the driver. Find...

Do you install the latest driver? I suggest you change the PCI slot as well. And it freezes the whole computer or some just part of it such as keyboard or mouse?

Did you download the driver from the tplink website? Make sure firewall is disabled and uninstall anti-virus software if any before installing the driver. Follow the instruction to install....

A server in your network is using the port 2020. You need to find out what it is. Or change another port.

It's able to do loop recording. When SD card is full, it will erase the files of early days and keep recording. If it stopped recording, there may be affected by some files in your SD card. You can...

that's great ;)