device manager not showing devices

I am running windows xp service pack 2 on a 1.5ghz pentium 4 computer.

Device manager is not showing any devices connected to the USB2 port hub. I have disconnected these devices, including the usb2 hub, and reinstalled but it says there is problem with the hardware.

So I thought check through device manager but lo and behold - zilch is showing in device manager not even the normal tree

Any advice woudl gratefully rec'd. Thanks

 

How about plugging them in straight to the USB2 port, instead of the hub?

 

erikske,

Thanks. This computer is old and has usb1 ports on the Motherboard. It also has i/o card that means usb2 devices can work. They were working up till about 2-3 weeks ago. I have looked on the microsoft forum but they suggestions don't work - I guess i will have to reinstall windows XP

 

I found this when searching the web:

Code:

1. Go to Start, Run, and enter regedit and select OK
2. Maximize the HKEY_LOCAL_MACHINE window.
3. Scroll down to SYSTEM\CurrentControlSet\Enum
4. With Enum selected click the Security option from the Top of the screen then the Permissions menu.

Note: At this point you will probably notice there are no permissions on this key.

5. Click Add
6. Add the group Everyone and the user SYSTEM
7. Select Everyone and check only the Read box
8. Select SYSTEM and check Full Control
9. Click the Advanced button at the bottom of the window.
10. On the Advanced window check Reset permissions on all child objects
11. Click OK
12. On the warning window click Yes
13. Close REGEDIT

Re-boot the system if necessary and then check the device manager to see if everything is showing now.

You can also try this Microsoft solution (if you haven't already)

 

Thanks guys for the help but it did not work so I reinstalled windows and everything in terms of the USB ports and hubs are now working