splshwrp.exe is a file belonging to Windows XP Tablet PC Edition by Microsoft Corp. This process is responsible for displaying the splash page and might be modified by different suppliers to display their logo. Disabling or enabling it is down to user preference.
Non-system processes like splshwrp.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