dkaaj1da.dll is a DKAAJ1DA.DLL
belonging to Windows (R) 2000 DDK driver
from Lexmark International, Inc.
Non-system processes like dkaaj1da.dll originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.