Hi everyone. Anyway, my Lumia 640 on release preview did a sudden restart while installing apps and now asks for an sd card scan every time I turn it on. However it scans and doesn't do anything and makes it unusable till i restart the phone and chose not to scan it. Keep in mind I would let it scan for HOURS and nothing would happen. Now when I take the card out and use chkdsk f/ it comes up with "an error occured while examing the volume bitmap". Any help? I'd hate to have to resort to formatting or resetting my phone. Using a sandisk class 10 micro sd that I got from Amazon.