?Unnown device only in Device Manager after clean

[Alex_ 0]

After clean up in my computer in device manager is only <?Unnown device>. Device work normal, but I cant look propertes of device.

I make reserve copy before clean reester. How I can return to normal work system?

Windows XP SP2, CCleaner v2.01.507.

[hazelnut 2]

If you made a backup when you cleaned the issues, it will be found in documents and settings. Right-click and choose merge.