DCS crashes and don't work
Some IMPORTANT notes !
1. Your PC have to meet minimum or recommended system requirements:
Minimum system requirements (LOW graphics settings):
OS 64-bit Windows 7/8/10; DirectX11; CPU: Intel Core i3 at 2.8 GHz or AMD FX; RAM: 8 GB (16 GB for heavy missions); Free hard disk space: 60 GB; Discrete video card NVIDIA GeForce GTX 760 / AMD R9 280X or better; requires internet activation.
Recommended system requirements (HIGH graphics settings):
OS 64-bit Windows 8/10; DirectX11; CPU: Core i5+ at 3+ GHz or AMD FX / Ryzen; RAM: 16 GB (32 GB for heavy missions); Free hard disk space: 120 GB on Solid State Drive (SSD); Discrete video card NVIDIA GeForce GTX 1070 / AMD Radeon RX VEGA 56 with 8GB VRAM or better; Joystick; requires internet activation.
Recommended VR systems requirements (VR graphics settings):
OS 64-bit Windows 8/10; DirectX11; CPU: Core i5+ at 3+ GHz or AMD FX / Ryzen; RAM: 16 GB (32 GB for heavy missions); Free hard disk space: 120 GB on Solid State Drive (SSD); Discrete video card NVIDIA GeForce GTX 1080 / AMD Radeon RX VEGA 64 or better; Joystick; requires internet activation.
2. Integrated video cards from Intel are not supported.
3. Drivers for Video and Sound devices should be Updated from manufactures website
DirectX End-User Runtime Web Installer (DXwebsetup)
4. If you need to completely remove AMD / NVIDIA drivers from PC please use DDU.
Display Driver Uninstaller DDU - is a driver removal utility that can help you completely uninstall AMD/NVIDIA graphics card drivers and packages from your system, without leaving leftovers behind (including registry keys, folders and files, driver store).
5. How to use sfc /scannow - it will inspect and repair all of the important Windows files on your computer, including Windows DLL files.
a) open Command Prompt as an administrator
b) type the following command: sfc /scannow and then press Enter
c) system File Checker will now verify the integrity of every protected operating system file on your computer
find more information on the website www.lifewire.com
also you always can google it for other information
6. It's important to set the Windows page file to a system managed size or a custom size to 16 - 32 GB or more
Game crashes with an error in the dcs.log DXGI_ERROR_DEVICE_REMOVED
In most cases, it's a hardware problem with the video card or drivers.
Many hints and solutions can be found on the Internet, please Google it for - DXGI_ERROR_DEVICE_REMOVED
Some registry editing tips can be found online, in most cases, they do not help regarding DCS gameplay.
Try decreasing DCS graphic settings, set them to medium or low and then check gameplay.
Perhaps you need to reduce the number of monitors if you have multimonitor setup.
It is very important to check the power supply unit (PSU) and the outlet.
Your power supply must have more power than indicated in the description of the video card, even if you found it on the official website of the developers.
Moving your graphics card to a different PCI-E slot on your motherboard can help troubleshoot issues.
Also there is an option in the BIOS named Above 4G Decoding, which you can Enable in order to fix the problem.
BIOS update also can play some role here.
Try to decrease Factory overclocking of your video card using Afterburner software: https://us.msi.com/page/afterburner some users have experienced problems with factory overclocks.
If you can, swapping your video card with another to check the issue can also help troubleshoot a problem.
Maybe you can find another solution, don't forget to share it with us in technical support: http://www.digitalcombatsimulator.com/en/support/