I believe your Kindle was at some time disconnected from your computer without properly "ejecting" it first. Below is a quote from another thread describing my experience as to how I personally determined why the same thing was happening to me.
What to do about fixing your immediate problem? The best first thing I can suggest is to
powercycle your computer (turn it all the way off, then on again) and also restart your Kindle [Menu button -> Settings -> Menu button -> Restart (
not Reset to Factory Defaults- that's overkill)]
umm... that should fix it. At least it did for me. I don't see that you should need to, but you could then also try going to Device Manager (Start button/orb -> Run... -> type: devmgmt.msc ). Under "Disk Drives" there should be "Kindle Internal Storage USB Device" listed. Right click it, click "uninstall," Click OK on the confirm dialog. After the Kindle driver is removed from there, click "Action" in the menu bar at the top and then "Scan for hardware changes." It should rediscover the Kindle.
Again, I don't think you have to do that, as the first suggestion worked for me, but it is still an option you can try.
Quote:
Originally Posted by chyron8472
I used to have intermittent problems with my Kindle not being recognized when reconnecting after having unplugged it from my desktop pc.
Here's what I discovered:
Since I am using Windows 7 x64, ejecting my Kindle from "My Computer" or the "Safely Remove Hardware" system tray icon has a different effect than ejecting it from Calibre.
- If I "eject" my Kindle from either "My Computer" or from the "Safely Remove Hardware" systray icon, it will remove my Kindle from appearing in Windows and my Kindle will then come out of USB Mode while still plugged in;
- If I "eject" my Kindle from Calibre first, my Kindle will no longer appear elsewhere in Windows either but the Kindle itself remains in USB Mode as long as it is still connected. It is this method which I believe causes the Kindle to sometimes not recognize properly when reconnecting to the computer.
With this in mind, I always eject my Kindle from Windows rather than from Calibre.
My laptop, however, is running XP 32-bit, and never causes any issues if I eject from either location. I believe I read somewhere that the issue of Calibre not kicking the Kindle out of USB Mode is a problem Calibre has when running on 64-bit OSes.
All I know is, ever since I started ejecting my Kindle from Windows rather than from Calibre on my desktop pc, I no longer have any issues at all.
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