I have a Dell PC with Windows 7 beta and Vista. I activated OSS and now all it shows is "Unknown Operating System" which is the Dell diagnostics program. So now that I've installed OSS it picked that as primary boot since it is the only thing that it detects. I tried deactivating it with the DD boot disk but it makes me pick how to boot and the only choice it gives me is the diagnostics program and keeps booting to that. So now I can't get on my computer at all! Any help?