In some cases, you may need to register the .dll file. To register the .dll file, open Command Prompt as an administrator, enter the installation folder, and run the "regsvr32" command. You'll receive a confirmation if the .dll file is successfully registered.
Unregistering a DLL file deletes its information from the Windows registry. Keep in mind some DLL files can't be unregistered.
Receiving a .dll error on startup typically means a startup program is trying to access a missing .dll or remnants of old software. Ensure all programs are correctly installed and that there are no leftover traces of old software.