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Dell E5500 Keyboard and Mouse not working

I have a Dell E5500 running Windows 7 and the keyboard and mouse stopped working.  For the keyboard I get  "Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. (Code 19)".  For the mouse I get  "This device cannot start. (Code 10)".

I have tried deleting/re-installing devices and drivers, ran AVG & Malwarebytes programs, disk check, verified and updated bios, deleted all windows updates since problem, verified all programs are enabled in MSCONFIG.  

I do have this machine running both Windows XP and 7 as a dual boot.  WIndows XP works just fine.  I cannot get the devices to work in safe mode.  I believe that there is a registry issue but of coarse I have no backup.

Any help would be appreciated before I have to reload the machine.

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