Thinkpads Forum

Lenovo T420s type 4174-AW8 12/05

Windows 7 Pro 64bit was migrated using Samsung program from Samsung 128g SSD to a Samsung SSD 850 EVO 250g mSAT.

Known good USB thumb drive and SD card work in another laptop - BUT not in this T420s.

Device manager shows both with yellow mark.
Right click and choose "Update driver software," it reports "The best driver software for your device is already installed."
Uninstall and reinsert and Windows reports "Device driver software was not successfully installed."
How can the "best driver" be already installed, and then not be successfully installed?
This situation applies to both the USB thumb drive and the SD card; which may mean it is not a hardware problem, or am I missing something? Did the migration leave something behind?

I would run Microsoft Update and Lenovo System Update to double check.

Brad

Done that, but I'll do it again, just to make sure.

You could try the instructions in post #4 here: http://www.sevenforums.com/hardware-dev ... vices.html

Went there, got confused with so many folders to not know which folder contained the files I was supposed to change. I guess I'm too much of a novice to follow those instructions. Thanks anyway.

Problem solved - after numerous boots and reboots in trying to fix the non-function of both the USB and the SD I got tired of seeing a window open telling me about Samsung Magician. I uninstalled it and WOW now both USB and SD working as normal. I guess Samsung's migration needs some revision.
Thanks for the attempts to help; they're appreciated.