SOLVED: Can't sleep, restart, shutdown; Explorer won't refresh (Solution on last post, but the short version is that I had to use the Device Manager to "Uninstall the hardware" for my built-in SD card reader, so that Windows just forgets that the hardware exists. I can't use it anymore, but that's cool with me. I'll trade my card reader for my sanity any day of the week.) I've seen several posts here about similar issues, which I suspect to be connected: I've got the RC on my laptop, and things are great. At some point, though, explorer.exe gets weird and refuses to refresh things. Copy and paste a file, and it won't show up. Push F5-- ah, there it is. Same if you delete a file, or create a new one. Also, when I open a new explorer window, it's a 1 in 10 chance that it'll work. When it doesn't work, it acts like it's trying to find drives, folders, etc. Virtually nothing shows up in the tree at the left, or in the main panel on the right. (See attached image.) Typing addresses directly into the address bar, or using a command prompt to go to locations works perfectly well, still. Programs that are currently running have no trouble accessing specific folders, but usually hang when trying to view My Computer. When trying to shut down, restart, hibernate or sleep, the computer will get stuck on the "Shutting down..." screen, or on a black one if trying to sleep. Nothing ever happens after that. I've let it sit overnight, just to be sure, and it never completed the task. I created a Restore Point after I reformatted and was convinced that all was well-- I disabled updates after that, didn't install any new drivers, software, or hardware. Yet suddenly the issue resumed one day. I restore to said Restore Point, and the problem does NOT go away. I have stopped every conceivable service, killed every process possible, and dug deep into clearing caches and carefully tweaking registry spots where it seemed possibly relevant. This has nothing to do with some of the common suggestions made in other posts, including ISO mounting utils (these mostly no longer cause problems in the RC anyway), and all of my drivers are up to date. If you suggest anything of the sort, you will have proven to me that you did not read past my initial description of the issue. Basic computer specs: HP TouchSmart tx2 Windows 7 RC x64 Computer is a tablet, with Multitouch, built-in fingerprint reader, and IR sensor for a media remote. Please-- I'm pleading with anybody to reveal their helpful info, if they have any. I'd kill babies just to know what the culprit element is. If there simply is no solution, I'll accept that, but I NEED to know what's causing it. My technical experience is high, yet I cannot get to bottom of it.