Please try the following:
■Restart Computer
■Clear Download Cache
Clearing the Steam download cache will cause the Steam client to flush locally cached configuration data and acquire it from the Steam servers again.
■Repair Library Folder
The Steam library folder contains all of your installed games on disk. These folders need to be writable by all users in order to update properly. Sometimes these user permissions break and need to be refreshed.
Navigate to your Steam -> Settings -> Downloads -> Steam Library Folders -> Right click on folder -> Repair Library Folder
■Verify Local Files
Sometimes files on hard-disks and other storage devices become corrupted because of bad hardware, software crashes, power surges etc. Steam can verify the correctness over installed game files and fix them if necessary.
Find Game in Library -> Right click game title -> Properties -> Local Files -> Verify Integrity of Game Files
■Change Download Region
The Steam content system is divided into geographical regions. The Steam client automatically detects its current region and uses content servers located in that region for best performance. Sometimes, servers in a specific region may be slow, overloaded or have a hardware failure causing download issues. It is advisable to temporarily switch to a different download region to use another set of content servers.
Steam -> Settings -> Downloads -> Download Region. You may need to test several regions other than your own.
■Reinstall Steam
https://store.steampowered.com/about/←Download the installer here and reinstall Steam to the same location where it is already installed.
This may fix potential issues with Steam client and service files. Installing into same location will preserve all installed games.
[WARNING!] Uninstalling Steam will delete all game content.
■Move Game Folder
It can be very helpful to test the issue by installing on an alternate hard drive. If one is already available, you can create a new Steam library folder on this drive. You can then install new games into this Steam library folder or move already installed games there.
Steam -> Settings -> Downloads -> Steam Library Folders -> Add new Library folder
If the problem is not resolved after trying the methods above, please provide the information below and contact us again:
1.) Have you tried the above methods?:
2.) The computer Type/Model number:
3.) Language set in the main body:
4.) Language set in the game: (Traditional Chinese/Simplified Chinese/English)
5.) The version of the game (Number):
6.) Date and time of occurrence:
7.) Does it happen often?:
8.) Screenshot which we can confirm the issue:
9.) Do you have any MODs installed?:
10.) If you have another steam game, does it boot?
11.) The version of DirectX:
※How to confirm the version
1. Click [Start]
2. Click [Select the file and then execute]
3. Enter “dxdiag” and click [OK]
4. The [DirectX version] line shows the version of DirectX on the [System] tab.