So about a month ago I picked up a pack of Lexar Professional 1000x CF cards. I've used them a couple of times with no issues. Took some shots yesterday and put the card in my card reader in the desktop last night but got sidetracked and never imported them. Went to do it this morning and the card wasn't showing up to import from in Lightroom. So I clicked on My Computer and when clicking on the card says no images. So I ejected the card and put it back in the camera and it says "card cannot be accessed. Reinsert/change the card or format card with camera". You have got to be kidding me. Please tell me there is something that can be done. I'm extremely annoyed as the shots I took are ones I've been trying to get for some time with no luck, a RTH feeding on prey. The only two things unusual were that I left the card in the reader overnight and the computer went into sleep mode, and it was extremely cold yesterday when shooting, like 5 degrees. But the images were viewable on camera prior to removing card. I'm so annoyed hoping someone can help.