I have been transferring photos from Lolita's mobile phone to my computer.

Yesterday I uploaded some photos and I got a pop up on my lap top saying there is an error with the drive do you want to fix it now? (this is the phone's memory card which I slot in my lap top). I selected fix, the photos no longer show with a thumbnail image in the folder since this, and instead of showing as J peg files they have been re named to .....type of file 004 File (.004)

each photo 001 ..002 004 and so on, I opened some photos in paint to try change to jpeg which i selected to save as, but they were renamed as JPO,

My Avast antivirus put some of the mobiles files in the vault as trojan, some photos some mp3 files, amongst a few others. I've been running virus scans but finding nothing,

Any ideas?