Once I've put my SD memory card into the slot and opened the drive only a certain number of the photos are actually loading, the rest all have the 'broken file' logo. They won't even generate a preview. I really don't understand because half the photos are loading! Please help cause I've got some really important photos I need to email to somebody for work and I can't figure it out!

Were all the photos taken with the same camera?

Yeah, they were all taken with the same one.