HP Pro 3330 Microtower Maintenance & Service Manual page 164

Do not know how to remove a media card correctly.
Cause
The computer's software is used to safely eject the card.
After installing the media card reader and booting to Windows, the reader and the inserted cards are not recognized
by the computer.
Cause
The operating system needs time to recognize the device if
the reader was just installed into the computer and you are
turning the PC on for the first time.
After inserting a media card in the reader, the computer attempts to boot from the media card.
Cause
The inserted media card has boot capability.
154 Appendix A Troubleshooting Without Diagnostics
Solution
In Windows 7, click Start, select Computer, right-click on the
corresponding drive icon, and then select Eject. Pull the card
out of the slot.
In Windows 8, on the Start screen, type e, and then click File
Explorer from the list of applications. Expand Computer,
right-click on the corresponding drive icon, and then select
Eject. Pull the card out of the slot.
NOTE: Never remove the card when the green LED is
flashing
Solution
Wait a few seconds so that the operating system can
recognize the reader and the available ports, and then
recognize the media inserted in the reader.
Solution
1. If you do not want to boot from the media card, remove
it during boot or do not select the option to boot from the
inserted media card during the boot process.
2. During POST (Power On Self-Test), press
the boot menu.
3. Change the boot sequence in F10 Computer Setup.
F9 to modify