Lenovo H520 desktop computer, running Windows 8.1. If you haven't put an SD card in it for a few weeks, it takes upwards of half an hour for it to finally realize there is an SD card in the port. Once in realizes the card is there, and reads it, you can swap cards in an out, and it quickly sees and reads them. Until you don't do it for a while, then you get to repeat the problem.
It also does this when the card is inserted into the Epson Artisan 835 printer. The printer immediately sees the card, but not the PC. Though once the PC finally does see it, it sees it and any replacement card instantly.
Darned if I can figure out why it seems like the SD card port goes to sleep when not used for a while. Same with the printer, though the printer itself sees the card just fine. I've researched the problem as well, and can't find a similar problem or a fix.
I've gone through the drivers, no problems and no updates. I'm just not finding a problem to fix.
Any ideas?