I saw that Windows 8.1 Preview No sound on Macbook Pro Retina was closed since it's Preview/Beta code and the issue may very well be fixed by MS or the PC manufacturer in the months to come before Win8.1 RTM. Here's another one in the same vein posted recently: Sony Vaio CPU fan runs at full speed after installing Windows 8.1 preview.
Do we treat all such queries about pre-release software and prototype hardware similarly, and close them if the problems cannot be addressed by end users (the questions can be reopened later if required of course)? And if so, what close reason should we use?