Looks as if it's a hardware issue after all... Yesterday I was searching on some MS forums about the issue I've been having with the constant "Unable to Access Drive" error I keep getting when I attempt to access the SD drive. I think I may have found a workable solution. It's been about 24 hours since I applied the fix. My SP3 has been through many sleep/wake cycles, a few restarts, etc. No issues to speak of yet, the drive has performed without incident. This is what I did: (excerpt from post) 4.) Attach a couple of pieces of tape, a thin sheet of paper, or some other very thin layer to thicken your micro SD card up to 0.03 inches. Make sure you do this on the side OPPOSITE of the gold contacts. The goal is to thicken the card to allow the spring tabs to more tightly tension the card against the contacts of the card reader. Full post here: (7th or so down from the top) http://answers.microsoft.com/en-us/...e67-96c7-20226f28f13f?page=5&tm=1420921491515 Any and all feedback welcome!