recguard.exe is a process from HP that prevents a user from deleting or corrupting the WinXP Recovery Partition on Hewlett Packard computers.
It is not an essential process but care should be taken with its removal.
Non-system processes like recguard.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that over time your registry suffers fragmentation and accumulates invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues