The desktop window manager won't load at startup, or by manual initialization. This problem started on the first system restart after I installed Asus Smartdoctor and AMD Overdrive. I installed a new asus ATI Radeon HD4890 (and a new power supply) last week, as well as new drivers, but there had been several restarts between those changes and the appearance of the problem. I tried a system restore to the oldest possible date, but that wasn't early enough, I guess. Here's some info: Version: 6.1.7100 Build 7100 Computer Model: Home built RAM: 2gb ddr2 1066 Hard Drive: OS is on a 70gb Barracuda, media and stuff is on a 750gb barracuda Graphics Card: Radeon HD4890 (asus EAH4890) Antivirus: AVG Downloaded Beta From: Microsoft Other OS’s on the Computer: None Thanks for taking the time to read, and hopefully respond.