Plug and play device not working
Hello,Pluga nd play device MpKs19b929c7b is not working on my windows 7 . any advice
You can check it against Microsoft's win 7 compatibility list.
teecee1942 said:Hello,Pluga nd play device MpKs19b929c7b is not working on my windows 7 . any advice
I know this is an old post, but it shows up at the top of google searches for this problem but I wanted to post my solution for others facing this problemn.
I had this problem, and it extended to ALL devices not just USB. The problem turned out to be that I had installed a half-arsed program that incorrectly modified the value of HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\DevicePath, which normally defaults to "%SystemRoot%\inf".
They tried to add their own directory to the path, but the fools rewrote the key as REG_SZ instead of REG_EXPAND_SZ, which is necessary whenever the string contains an environmental variable.
Every time installation of a new device was attempted, the following error would appear in C:\Windows\inf\setupapi.dev.log
dvi: Enumerating INFs from path list '%SystemRoot%\inf'
inf: The path %SystemRoot%\inf\*.* is missing!
Consequently, NO device would plug an play, including any system devices one might uninstall to try and force a fresh install. Not knowing about the above bug, when I updated several drivers, my system blue screened because several system devices "disappeared", including the system drive.
Once I used the system recovery tool to install a restore point prior to the attempted driver upgrades and then figured out the problem, I deleted the old DevicePath key an made a new one with the correct data type and that fixed everything. (While I was at it, I set the DevicePath back to the default value and uninstalled the offending program.)