Windows 7 only gives me active USB ports when the DISABLE DRIVER SIGNATURE ENFORCEMENT is selected during system boot

Question

I can only use the computer if I press 8 and select "DISABLE DRIVER SIGNATURE ENFORCEMENT". Without this, the system comes up OK but I do not have access to the keyboard and mouse. If I select any other boot option the system boots up but I am
unable to login since neither the keyboard nor the mouse is working.
The Device Manager is clean. All drivers work and have digital signatures. I tried to use local group policy editor to disable digital signature enforcement but was not able to make any difference. The OS is 64-bit Windows 7 Professional with Service Pack
1 and latest updates.
The system includes a WD USB 3.0 card, which I have been using for over 3 years without any problem. I recently (3 days ago) updated the WD SmartWare for Windows software. It seems that my problem coincides with this update. Since then, I removed WD SmartWare
and Installation software and restored the Registry to its previous restore point however the problem still exists.
As per SIGVERIF the not signed drivers are:
difxapi.dll              7/13/2009      2.1.0.0          Not Signed
usbccgp.sys              9/4/2013       6.1.7601.18251      Not Signed              
usbd.sys                 9/4/2013       6.1.7601.18251      Not Signed                        
usbehci.sys              9/4/2013       6.1.7601.18251      Not Signed                    
usbhub.sys               9/4/2013       6.1.7601.18251      Not Signed                       
usbport.sys              9/4/2013       6.1.7601.18251      Not Signed           
usbuhci.sys              9/4/2013       6.1.7601.18251      Not Signed   
The problem appears to be related to the not signed USB drivers.
The current USB 3.0 host controller is from Renesas Electronics (ver. 2.1.39.0). According to the Device Manager it is digitally signed and working fine.
Does anyone know how to fix this problem?
Thanks,
DC

Answer 1

This issue was fixed on my PC as follows.
1) Taking ownership of the above usb*.sys files in  the drivers folder
2) renaming them to usb*.sysold
3) Using Device Manager to uninstall all USB devices with the yellow warning ! next to them
4) Doing a Scan for Hardware changes via the Device Manager toolbar and then waiting a few moments whilst the USB devices are re-installed with signed drivers.
Hope this helps you....
usb drivers files in my drivers folder after the above process:
12/02/2013  04:12            19,968 usb8023.sys
21/11/2010  03:24            32,896 USBCAMD2.sys
27/11/2013  01:41            99,840 usbccgp.sys
12/07/2013  10:41           100,864 usbcir.sys
27/11/2013  01:41             7,808 usbd.sys
27/11/2013  01:41            53,248 usbehci.sys
25/03/2011  03:29            52,736 usbehci.sysold
27/11/2013  01:41           343,040 usbhub.sys
25/03/2011  03:29           343,040 usbhub.sysold
25/03/2011  03:29            25,600 usbohci.sys
27/11/2013  01:41           325,120 usbport.sys
25/03/2011  03:29           325,120 usbport.sysold
14/07/2009  00:38            25,088 usbprint.sysold
11/03/2011  04:37            91,648 USBSTOR.SYS
25/03/2011  03:29            30,720 usbuhci.sys
21/11/2010  03:23           184,960 usbvideo.sys
              19 File(s)      2,783,104 bytes
The .sysold files are the ones I renamed, I think also renamed the usbccgp.sys - but accidentally deleted it after the rename..