host slot, then there will surely be a device in Device Manager after entering the system. If the driver is installed correctly, the name of device should be MRT Extended SATA Controller. If the driver is not installed, the name of device may be "Unknown Device", "Unrecognized Device", "Universal AHCI Controller", or "Universal IDE Controller" etc. But whatever the name is, there will be one more device in Device Manager after MRT card plugged. If not, there must be hardware problem. It may be too much dust in PCIE slot or MRT card failure. If it is the latter one, you need to return the MRT card to the vendor for replacement.
If you can see a new device, hardware problems can be ruled out. In this case, you can use DriverSetup.exe to install the driver. If the installation of driver fails, it must be problem of Windows operating system.
Which problems can lead to MRT unsuccessful driver installation?
1) Obstruction caused by antivirus software
2) Damage of Windows Service Manager component or improper permission settings
3) Damage of Windows Plug and Play Manager component damage or improper permissions equipment
4) Damage of registry of MRT driver
5) Wrong group policy settings
6) Not compatible with a hardware driver already installed
7) Damage of other system files functionally related with driver installation, Plug and Play or device management.
In short, a lot of reasons and errors of Windows system may lead to failure of MRT hardware driver installation. The process of identifying the cause and solving the problem is complicated. Searching for the solutions for failure of installing driver of sound cards, video cards, network cards on Baidu, you can find that almost all the external devices can have problems when you try to install the dirver of them in some operating system. The cause of the problem is varied.
The best solution for this problem is to reinstall the operating system, then install MRT hardware driver in a completely clean environment. Do not install other software until MRT driver and MRT application are installed and tested to be available. After installation of other software, make a one-click restore backup for the entire system disk(generally C:\). With the backup, you can make recovery quickly by One-click Restore when operating environment of MRT is damaged. It will save a lot of time. Please note that only C:\ needs to be backed up, because the operating system, registry and MRT hardware driver are all in C:\. MRT application is pure green software and does not rely on the registry. So it can be easily repaired after damaged.
Sometimes you still cannot install the driver after reinstalling the operating system. At this time, we suggest you change a system installation CD. Some system installation CDs may be unpatched  or have been simplified, thus lacking some important files. In operating system installed with this kind of CD, generic applications (such as chatting software, player, browser etc.) can run, but MRT cannot. This is because MRT requires a standard and complete operating system environment. Therefore, if the MRT still cannot run after reinstalling the system, we suggest you use different versions of system disk to reinstall the system. Similarly, if you find a system disk that allow normal operation of MRT, do not forget to make a copy of one-click restore. So you can make recovery quickly next time when something goes wrong. Please note that do not plug in MRT card when installing operating system with system disk. Otherwise MRT card can be detected and the operating system will force to install a driver for MRT that is not compatible with it. Even if the installation is successful, MRT driver may be damaged by antivirus software in the future. So you need to add C: \ WINDOWS \ system32 \ drivers \ mrtatarx.sys to the white list of antivirus software.

2. After installing the driver, there are multiple MRT Extended SATA Controller devices in Device Manager.
Under normal circumstances, there should be only one MRT Extended SATA Controller device in Device Manager after installing driver. If you see several devices, that indicates the motherboard or other hardware of host not compatible with MRT. In this case, the best solution is to replace motherboard or other hardware device that is not compatible with MRT. We listed the recommended motherboard and computer configuration in compatibility list. If you use the recommended motherboard, generally there would not be this kind of problem. If you encounter such problems and do not want to replace the motherboard, you can try the alternative solution as follows:
If there are multiple MRT Extended SATA Controller devices in Device Manager, typically, this is because the MRT driver installation program forced to install MRT driver for other devices by mistake. So the user needs to find the original devices, and disable these devices in the BIOS settin