it is the problem of DNS setting. Usually this problem is due to the "local connection" in the DNS is not setting good. There are two solutions. First one is to set correctly in router. It is suitable for LAN. We all know that usually we open DHCP server function of router when configuring LAN. So router could distribute the information of IP address, DNS server and so on. It is convenient. The setting is required the related settings of router is correct. Router must start using DHCP service and DHCP service of router must use extranet DNS server address to configure client.
Due to routers have different brands and different setting methods. Now we list a correct setting screenshot of Tenda router. Setting is shown in the picture in DHCP server of router’s Web setup interface:

If master DNS server and alternate DNS server keep the default of 0 address, DHCP server can configure host machine by DNS address which provided by Internet gateway. Choose “Support” option, click “Detail information” and you can see DNS configure parameter similar to the following picture:

Pay attention to DNS server: Each column has two public addresses, if this column is similar to the router address such as 192.168.1.1. The configuration is incorrect. You need correct configuration in router. If you are unfamiliar with configuring from router, the other solution is correct DNS configuration in the client machine directly. The disadvantage is every machine need to be set. Methods are as follow:
1. Open the local connection attribute, shown as picture:
 

2. Double click “Internet agreement (TCP/IP)”
3. Select “Use the under DNS server address” in “Rule” option, and then fill user’s local DNS server address. The example is shown in the picture:

Pay attention that you need to fill both master DNS and alternate DNS and don’t just fill one DNS. Why? Because master DNS general preserves domain information of the larger site and alternate DNS preserves domain information of the smaller site. So if you don’t fill alternate DNS, it will lead there is no problem to visit large websites such as Baidu but when you visit small websites, it can’t analyze realm name and can’t visit MRT users center.
Besides, you need to pay attention that it is filled DNS server of Wuhan area for examples. Users should fill their local DNS server. How to know it? Generally, you can inquire in Baidu or if it is LAN, input http://192.168.1.1 to open the page of router configuration. It will show DNS server address in “WAN port state” of the home page of configuration. After setup correct DNS, click “confirm”, and then MRT online version can be used normally.

Common problem five: ATA interface connects HDD but have no state

The breakdown phenomenon is: You connect HDD in ATA interface. HDD performs well, power on and HDD runs normally, then look at the state lamp but it doesn’t ready, it shows interrupt power (BSY lamp is not light and other lamps are all light). This problem may because MRT hardware card condition accidental error or there is other hardware device has conflict to MRT hardware card device. If it is accidental error, you can reboot computer and it will return to normal. If it has device conflict, it indicates master board may be incompatible with MRT hardware card. The best solution is to change a compatible master board to MRT (Details introduced compatible master board refer to software and hardware compatible lists: https://info.mrtlab.com/hcl.htm ). if users don’t want to change master board, as for temporary solution, users could try the hardware which forbidden to cause conflict in BIOS setup. Generally speaking, the extra IDE/SATA controller is easy to has conflict with MRT, so if you forbid these IDE passes in BIOS, you can solve this problem.
Besides, there is another easier temporary solution. If ATA1 interface has no condition, you can try to change MRT hardware card to IDE model and then change back to SATA model. You can find that ATA1 interface condition is normal. Because when you change model, MRT hardware card will initialized again, so it can correct error condition. The detail of processes is:
1. Boot MRT application program, this time don’t open any factory module and make sure it only has main interface.
2. Click “IDE model” button in main interface, and then “confirm”, change MRT hardware card to IDE boot model. The location of “IDE model” button is shown in the picture:

3. After it is finished, click “IDE model” button again and quit IDE model.
4. After quitting IDE model, you can find the condition of ATA1 interface is normal. And then ATA1 interface can be used normally.
5. Every time rebooting computer, you need to repeat above processes.
For temporary solution, it is easy. If you want to solve t