How the graphics card brushes the BIOS

What is the graphics card BIOS

What is the bios of the video card, the graphics card bios is actually the "basic input and output system" of the display card. Hardware control procedures and related information for the display card are stored in the BIOS. It can be said that the BIOS is the "nerve center" of the display card.

The display card is the most typical Plug and Play device as long as it is properly plugged into the motherboard to start working. System-driven first appears on the monitor is the display card BIOS information prompts, only the display card is working properly the monitor may display other content. The data in the BIOS of the display card after boot is mapped into memory and controls the work of the whole card. In DOS the display card is not required any driver, Windows boot also relies on the display card BIOS support.

　　Determine the video card model

At present, there are many brands of graphics card in the market. Different brands of video card BIOS is not the same, generally can not be universal. The same brand of graphics cards, if the use of different display chips (GPU), the BIOS is not the same. Even if the product with the same display chip, if with different specifications of video memory, its BIOS is not the same. Therefore, when you refresh the graphics card bios, you must "seat". If you brush into the improper BIOS file, light will make the graphics card is not working properly, heavy will cause the video card scrap.

To determine the current graphics card specific model, the simplest way is to see the graphics card with the box, instructions, in addition, the graphics card on the PCB board will generally have a model sticker, through it can also know the brand and model card.

　　Determine the current BIOS version of the video card

How do I know that a manufacturer's BIOS is newer than the current BIOS version? The most common way to do this is by looking at the driver for the video card? BIOS version information. In addition, the details of the graphics card bios are also available through the Everest software.

　　Download the new BIOS file

The manufacturer's official website finds a new version of the BIOS file and downloads it to the local computer. It should be noted that the download files available on the Web are generally compressed files, the need to extract the decompression software decompression, attention to look at the extracted files, the suffix named. exe file is the Refresh tool ( The dedicated refresher for Nvidia is Flashrom.exe for Nvflash.exe,ati's private refresh program. , and files such as "Xxxxx.rom" and "Xxxxx.bin" are new BIOS files.

　　Make the startup disk and prepare the upgrade file

The BIOS refresh operation is more reliable in pure DOS, so you need to make a DOS boot disk that allows you to boot the system into a pure DOS environment. After you make a DOS boot disk, copy the downloaded BIOS refresh program and the upgrade file to the same directory on your hard disk. For example, in Disk C, create a new folder called BIOS, and copy all of the downloaded files to that folder. If you find that the download file provided by the vendor does not come with the Refresh tool, you must also go to the dedicated refresh tool for downloading the video card, such as drive home.

　How to refresh the video card bios

Here's an example of an Nvidia video card.

　　The 1th step : First is to confirm the ROM chip to support the refresh.

With the boot disk into a pure DOS environment, enter "nvflash-c " at the command prompt to test the ROM type used by the graphics card BIOS. If the Flash program supports the ROM chip of the video card, the details of the chip are listed and the error is prompted.

　　Step 2nd : Back up the current video card BIOS information.

Backup video card BIOS parameter is "B", its command is "nvflash-b ", that is, back up the current video card bios, coexist as "filename" file. In addition, backup of the BIOS can be done in advance under Windows, that is, through the Nvidia BIOS editor the software for backup.

　　3rd Step : Refresh the video card BIOS.

After completing the video card BIOS backup, enter "nvflash-f " to write the new BIOS into the ROM chip. During the refresh process, the screen will wobble and darken for a duration of about 10 seconds. If you return to the DOS interface again, the refresh is successful.

　Graphics Card Brush BIOS considerations

In the video card flash BIOS process, remember not to interrupt or power failure found, otherwise 100% refresh failed.