This file has been reported to be part of a spyware/malware/trojan. It is likely that the problem you are experiencing is linked directly to the spyware/malware/trojan rather than an actual missing DLL-file and the recommended course of action is to first locate/remove the Malware. We do not recommend downloading this file.
DLL-Files.com Support says:
A possible manual solution for you 'handyman-fixers' out there: (at your own risk)
aunps2.dll is a AlwaysUpdatedNews.com related parasite or malware.
Removal instructions involves making changes to your Windows Registry. Making the wrong changes can cripple your computer, so do this at your own risk.
1. Click start, choose 'run' 2. Type 'regedit' 3. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run 4. From the right pane delete the value: "AUNPS2" = "RUNDLL32 AUNPS2.DLL,_Run@16" 5. Exit the registry editor 6. Reboot your computer