The author uses the C68 motherboard integrated GeForce 7050P graphics card, with "Drive Wizard 2011" Detection, in the "Basic status" interface, the current video card driver version of 8.17.12.7574 (such as Figure 2), and 8.17.12.9745 certified version for upgrade. Switching to the driver management interface, you can see that the 8.17.12.7574 driver does not get a digital signature for Windows (Figure 3), so there may be compatibility issues.
It can be concluded that Windows 8 has a GeForce video drive of 8.17.12.7574, with a release date of July 20, 2011, but it is still possible to upgrade to the 8.17.12.9745 certified version, which was released earlier on April 3, 2010. Then select the 8.17.12.9745 version of the driver to upgrade, after the upgrade, browse the screen of the phenomenon of flower screens no longer, the problem was thoroughly resolved.
Because the Windows 8 Development preview version is not a formal version of the operating system, its own driver may not be digital signature authentication, and is not necessarily a stable version, it is inevitable that compatibility issues, it is recommended that you install the Windows 8 Development preview version, will be driven to upgrade, so as to avoid problems arise.