Deleting photos from camera

[magistra]

Help! When my son-in-law last visited he did something on my computer that automatically erases photos from my camera when they're imported to the hard drive. How can I reverse this instruction? And can I import photos from the hard drive to my camera?

[Milvus]

Your computers photo software will have a "delete from camera after importing" switch in its preferences or on its main import page. Change it back to No.
Not sure whether you can transfer back

[VHG]

Most cameras have the ability to "lock" a picture so it cannot be deleted from the camera.

When I have been on holiday or out on a trip and taken lots of pictures I always "lock" all my pictures so I cant accidently delete them.

Only once I have downloaded them to PC AND put them on CD or DVD do I then delete them from the camera.

It is good to get in the habit of "locking" your photos on your camera once you have taken a few.

You have to unlock them before you can delete them (or format the card which will also delete them).

[magistra]

thank you to Milvus and VHG for your answers.....problem is now solved!