Under the condition of having a NVIDIA independent graphics card that meets the requirements, the reasons for the absence of the dll file are as follows:
① The driver was not installed or updated correctly.
② The operating system files were damaged.
③ The system files were lost due to virus or malicious software attacks.
④ The user manually or through certain cleaning software mistakenly deleted the key system files.
The nvml.dll file needs to be installed manually or imported.