What is the installed program "64 Bit HP CIO Components Installer" on my Windows 7 computer? Why it is not visible in Control Panel?

"64 Bit HP CIO Components Installer" is an installed program on Windows 7 system managed by Windows Installer.

You will not see "64 Bit HP CIO Components Installer" listed on "uninstall or change a program" in Control Panel, because it is flagged as a hidden system component in the registry (SystemComponent=1).

Information related to "64 Bit HP CIO Components Installer" installed program:

Name: 64 Bit HP CIO Components Installer
Publisher: Hewlett-Packard
Size: 845 KB
Version: 15.2.1
System Component: 1
Identifying Number: {345F3F90-0505-4EDF-B7A9-5E3AC1AC6CE4}
Install Location: 
Install Source: C:\windows\system32\spool\DRIVERS\x64\3\
Install Date: 20161213
Local Package: C:\windows\Installer\54069b.msi
Package Name: cioum64.msi
Uninstall Command: MsiExec.exe /I{345F3F90-0505-4EDF-B7A9-5E3AC1AC6CE4}
Windows Installer: __msi__

It is recommented to keep "64 Bit HP CIO Components Installer" as an installed program.

⇒Hidden Installed Programs using Windows Installer on Windows 7

⇒⇒Windows 7 Installed Programs