hppoumui.exe is a TETRA
belonging to Language Monitor UI (32-Bit Pentium® 4 and Xeon™ Optimized Build)
from Oak Technology, Inc.
Non-system processes like hppoumui.exe 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.