I have a 2 year-old home-built computer with OEM Windows 7 Pro installed. A few days ago, Windows 7 randomly decided that I "do not have access rights to Logical Disk Manager," even though I had used it just a few minutes earlier. I've tried to restore access rights to Disk Manager, but my efforts have been futile so far. I've run dcomcnfg, though Microsoft's instructions are for Windows 2000, and MS' search feature won't pull up anything for Windows 7 (I notice that just now when I try using Yahoo! Search, all I get is a blank screen). How do I restore access rights to Logical Disk Manager?