Hello Lucyb9
I understand you are having issue with the shutter on your Photosmart M547 not working correctly. Before sending it in for repair I would attempt to reset the camera. To do this follow the steps outlined below.
1. Turn off the camera
2. Remove the memory card and batteries for at least 5 seconds
3. Reinsert the batteries and close the Battery/Memory Card door
4. Turn on the camera. On successful reset, you may be prompted to set the date and time
5. Verify that the camera works without an optional memory card, turn off the camera then reinstall the card
*** NOTE: When the camera is reset, any images or video clips stored in memory are retained
If the steps above to not rectify your issue than it would appear to be a physical issue and I think it would be best if you contacted HP technical support for repair options.
US Support link to contact options for laptops purchased in the US.
Outside of US Support link to contact options for laptops purchased outside the US.
I would like to thank you for posting on the HP Forums. Have a great day!