You will need
- - Riva Tuner.
If you have access to the operating system, then reinstall video card drivers. Download the current version of the software from official website manufacturer. The most popular video cards manufactured by ATI (www.ati.com) and nvidia (www.nvidia.ru).
Install required software and restart the computer. Make sure that the video card is working properly. If you can't boot the OS, try to execute the described algorithm, using Windows safe mode. Restart the computer and hold the F8 key. Download "Windows Safe mode" after opening the corresponding menu.
If errors in the card are not connected with the drivers, then use the program Riva Tuner. Install and run this utility. Open the Home tab and click the "Configure" button located in the submenu "driver Settings". Select "System settings".
Find two fields: "core Frequency" and "dram Frequency". Reduce the rates of both frequencies. First, change the values to 50 MHz. Press the "Test" button, and complete the analysis of the stability of a video card. If at the time of inspection errors, reduce the frequency by 50 MHz. Follow this procedure until, until the device starts to work stably.
Remember that this process will lead to slow performance. It is natural to use the faulty device is extremely dangerous, so it is better to sacrifice performance. Select the check box next to the option "Load settings with Windows" and click "Save". Then restart the computer. If you failed to configure graphics card for stable operation – replace the device to prevent damage to the motherboard.