Do you have Steam installed? This is a common problem when you have a corrupted .dll what you need to do is You're going to have to install Steam (skip this step of course if you already have Steam installed). Try deleting the steam_api.dll or move it to a different location and try updating your game. Run it after update and see if you will have the same problem. If the problem persist, try downloading a fresh copy of steam_api.dll over the net (just Google steam_api.dll) and place it where it is usually located. restart your PC then try again if this fixes your problem.
First thing you will need to do to resolve that issue is to verify the games files and then do the following:
You will need to extract the .dll-file to a location on your computer.
It is highly recommended that you unzip the file to the directory of the program that is requesting the file.
In case that fails to work, you will need to extract the file to your system directory.
By default, you can get that file in the following location: C:WindowsSystem (Windows 95/98/Me), C:WINNTSystem32 (Windows NT/2000), or C:WindowsSystem32 (Windows XP, Vista, 7).
You will need to ensure that you overwrite any existing files, but before that make a backup copy of the original file.
After that reboot the computer and the issue should be fixed.
Whenever I see that dialog, “Entry Point Not Found,” the problem is always related to an unsupported platform. The problem can be related to the operating system or it can also be the hardware. Especially, since this is a game, the most important component here is the graphics adapter. You need to have a supported video card to play the game.
Before installing the game “Call of Duty: Black Ops,” make sure your computer meets the requirements. “Call of Duty: Black Ops” supports Windows XP, Windows Vista, and Windows 7. The game is not certified to run on newer operating systems like Windows 8.x and Windows 10 but you can try.
The game requires Intel Core 2 Duo E6600 or equivalent AMD Phenom X3 8750 or faster processor, 2 GB RAM, Microsoft DirectX 9.0c-compatible video card with 256 MB video RAM and supports Shader 3.0, 12 GB free space, and sound card. That screenshot of the dialog is not from Windows XP. So I guess you have either Windows Vista or Windows 7.
In this case, you shouldn’t have any problem with the operating system. The next critical part is the required components. If your computer falls short on the required hardware requirements, you need to upgrade the affected device so you can play the game. The game “Call of Duty: Black Ops” is a first-person shooter game developed by Treyarch and published by Activision released on November 9, 2010.