No standalone video card found in Windows Device Manager

Independent graphics solution not found in Windows Device Manager

Rt.

My computer is the ThinkPad R400 2784 A42, the independent video card is the ATI HD3400 series. Once to Lenovo ThinkPad official repair shop changed the motherboard. Now, when using Everst or a driver or a driver, my machine is identified as T400. According to the online experience of the oil reflect, because the R400 motherboard and T400 are the same specifications, so they often take T400 to replace R400, And T400 's motherboard seems to be much better than R400. But this is not the crux of the problem, but at the outset there has been such a suspicion.

Exact description of the problem:

This problem occurs when I directly disable Linux's partitioned grid on Windows, Grub boot, and use WinPE for Windows boot partition to repair successfully. into Windows, found the original desktop right menu of the Catalyst Manager is missing, become a set of explicit hints. At this time I thought it was a single drive problem, so I would completely uninstall the drive that was all alone, but found that unloading to reload drive, found that the direct installation driver installation, in the Device Manager can not find the shadow of the independent graphics, with the Driver and Driver wizard, or Everst also can not find the shadow of the independent video card.

Problem Solving Method:

Search on the internet for a long time, some netizens put forward this method and successfully resolved:

Right click on the computer, select Management, enter Device Manager, select System device folding items, find the PCI bus option (or PCI buses), right-click the uninstall driver, and then follow the prompts until the uninstall is complete, prompted to reboot.

Restart your computer, and you will find that a large lost system hardware is discovered and recognized. Do not move at this time, knowing that all hardware devices are fully identified. OK, you can see the shadow of the standalone video card under the display device folding item in Device Manager.

Reboot the computer, and then install the standalone video driver. Then install the driver for the integrated video card. Then reboot is OK.

Thanks to this method, you can avoid reloading your system. In fact, it should be the North Bridge PCI interface driver out of the problem, a new update on the OK. In this share to you in the Device Manager can not find the independent graphics card students, I hope to help you!