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Windows 7: All USB devices disappeared from system ?

07 Jan 2014   #1

Windows 7 Pro 64bit SP1
All USB devices disappeared from system ?

Had trouble installing my new SSD but finally made it thru (Bios settings re new SSD boot drive & MB Sata connectors)

Was reassigning drive letters in MiniTool Partition Magic when I lost all my usb drives. The below jpg shows the issues. Have tried 'hardware/device' repair in Windows but no good.

All three USB devices show up in the bios boot up and usb controller is reported operating OK. The usb devices are just not showing up now in Windows or in Widows Explorer.

Device manager show these items as errors/trouble...but I can't figure out how to fox/repair them ?

Here's some jpgs showing the issue:

This issue appeared after the successful set up of my new Samsung SSD drive and enabling AHCI in the bios. UBS's disappeared after changing a few drive letters assignments to list the drives in order in Win Explorer ?? (did not change any USB drive letters as far as I know ?)

Thanks for any help on this....p.s. my mouse and key board are wireless usb with a toggle in a usb port and obviously I'm typing this so that is fine ? Also noticed no usb listed in safely remove usb hardware screen


Attached Thumbnails
All USB devices disappeared from system ?-missing-usb.jpg   All USB devices disappeared from system ?-devicemanager.jpg  
Attached Images
All USB devices disappeared from system ?-digital-usb.jpg All USB devices disappeared from system ?-miniport.jpg All USB devices disappeared from system ?-usb-failure.jpg All USB devices disappeared from system ?-nousbs.jpg 
My System SpecsSystem Spec
08 Jan 2014   #2

windows 7 home 64bit

Hi there .. Try Downloading the Chipset Driver from the Manufactures website ...

ASUSTeK Computer Inc. -Support- Drivers and Download M5A78L-M LX

If that does not resolve the issue ... Read the Link below ...

Error Code 52 - USB ports not recognizing connected USB devices - Microsoft Community
My System SpecsSystem Spec

 All USB devices disappeared from system ?

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