# Why prompt 'The program cannot be launched because of DLL errors...' or 'Program Startup Failed'? {% hint style="info" %} There can be several different reasons for errors related to DLL files. For example, malware corruption on the computer, damaged Windows registry, d3d12.dll file being deleted or misplaced, application errors, etc. {% endhint %}

Error pop-up before 2.7 version

Error pop-up now

### **Solution 1：** Confirm the CPU model and BIOS version of the current device Based on recent user reports, when using [`Intel Core i9-13900K/KF/KS and i9-14900K/KF/KS processors`](#user-content-fn-1)[^1] to run D5 and other DX12 software, due to environmental problems, the devices may prompt ‘The program cannot be launched because of DLL errors in the system’ or ‘Program Startup Failed’ pop-up messages. It is recommended to **update the BIOS to the latest version (released in April)** or **disable CPU overclocking, RAM XMP profile and Intel Turbo Boost/restore them to the default values.** *** ### **Solution 2：**Specific models of laptops Based on recent user feedback, when running D5 on **HP Omen and HP Victus** laptops, there is a tendency for the integrated graphics to be called instead of the dedicated graphics card (D5 only supports reading from the dedicated graphics card), which can lead to abnormal usage of D5. Solution: \[First choice] (Control Center of HP Laptops) - Select **'Discrete'** GPU mode in 'OMEN Gaming Hub-Graphics Switcher'.

Control Center of HP Laptops - Select 'Discrete' GPU mode in 'OMEN Gaming Hub-Graphics Switcher'

> If \[ First Choice ] does not work, please select **'NVIDIA GPU only**' in NVIDIA Control Panel - 3D Settings - Manage Display Mode. If there is no such option, try disabling the integrated graphics card.

select 'NVIDIA GPU only' in NVIDIA Control Panel - 3D Settings - Manage Display Mode

*** ### **Solution 3： Try a clean installation of the graphics card driver and change a path to install D5 Render** * Update the driver through NV’s official software [GeForce Experience](https://www.nvidia.com/en-us/geforce/geforce-experience/), or download and install the driver by manually selecting the appropriate graphics card from [NVIDIA’s official website](https://www.nvidia.com/download/index.aspx) * Update the driver at AMD’s official website [AMD Drivers and Support ](https://www.amd.com/en/support) * Update the driver at Intel’s official website [Intel® Driver & Support Assistant ](https://www.intel.com/content/www/us/en/support/detect.html) #### Manually search for drivers: 1. According to your specific hardware configuration, please select the appropriate graphics card driver. You can find multiple versions of the graphics card driver on the official NV website, allowing you to download the corresponding version. 2. Double-click the downloaded driver to install it. 3. Retain the default directory, click ok, and wait until the decompression is complete. 4. Select Install "NVIDIA Graphics Driver ", click “Agree and continue”. 5. Select ‘‘Custom’’, click ‘‘Next’’. 6. Click ‘‘Perform Clean Installation’’, click Next. 7. After the installation is complete, restart the PC.

Clean Installation

*** ### **Solution 4：Try to fix the issue by DXR Repairment tool** [*Download link* ](https://drive.google.com/file/d/1bOkWvdUTQjVLQg11KHMZOPio6wmQIRQ4/view?usp=share_link)\ Original proposal jumps: [Use the System File Checker tool to repair missing or corrupted system files](https://support.microsoft.com/en-us/topic/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system-files-79aa86cb-ca52-166a-92a3-966e85d4094e) Instructions: 1. Type “cmd” in the Windows search bar, right-click, and select “Run as administrator” to open the Command Prompt window. 2. Type the following command and press Enter (this operation may take a few minutes to complete):\ DISM.exe /Online /Cleanup-image /Restorehealth 3. Type the following command and press Enter:\ sfc /scannow\ Note: Do not close this Command Prompt window until the verification is 100% complete. 4. Once the sfc /scannow process is complete, the scan results will be displayed. > Note: Do not close this command prompt window until the verification is 100% complete. {% hint style="warning" %} If the issue persists after following the previous steps, please provide a detailed description of the configuration and the troubleshooting steps you have taken in the dedicated support post on the forum. We will then follow up accordingly: [Cannot solve the problem using the solutions provided ‘The program cannot be launched because of DLL errors in the system’ ](https://forum.d5render.com/t/cannot-solve-the-problem-using-the-solutions-provided-the-program-cannot-be-launched-because-of-dll-errors-in-the-system/27855)Thanks for understanding and support. {% endhint %} [^1]: --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.d5render.com/user-guide/common-pop-up-windows/why-prompt-the-program-cannot-be-launched-because-of-dll-errors...-or-program-startup-failed.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.