d1600ndu.dll is a DLL file that belongs to the Microsoft Windows NTOperating System. Files go missing. Files get corrupted. Files also pose as legitimate DLL files for Windows Operating Systems, and they might be a virus, Trojan, or spyware. The only way to know for sure is to determine from which directory they originate.
You might be surprised to know that up to 94% of computers have files that contain errors. Errors can happen when you least expect it. They can occur out of the blue or right after installing or deleting software programs.
One way to get rid of errors is to use a registry cleaner such as ZookaWare PC Cleaner. ZookaWare PC Cleaner is a registry cleaner like no other. It can usually get rid of errors with a single scan. And if not, then within the first 24 hours.