I have installed Windows 8 release preview
and I cant install android USB drivers, it says this:

and
“the third party INF does not contain digital signature information”
what to do?
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I had the same issue a while ago. Seeing that the USB driver hasn’t been updated since, the simple (and probably unsatifying) answer is revert back to windows 7. I’ve seen some scetchy drivers around but not for your device.
Windows 8 is still in preview/developer stage and I doubt we’ll see proper drivers until it’s closer to release. Just keep checking the SDK Manager and try again when the USB driver has an update.