MagicAndre, Thanks for looking at my trace. I didn't realize 285.27 was out. I updated it and turned off hybrid sleep. The only difference was when the computer hung on resume, resetting caused a hard reboot rather than a Windows resume. I was unable to get a good trace with this configuration so I turned hybrid sleep back on and got a new trace. It also hangs and I have to reset to get a Windows resume. Before sending you my first trace it looked like avg was causing a long delay so I removed it. I should have suspected the video driver since the monitor does not wake-up. I have since googled similar problems and it seems Nvidia has a history of problems with sleep and their drivers. I am running a 9800Gt card. I took a new trace with the new driver installed. When I tried to convert it to an .xml file, I got an error message which read "xperf: error: /tti: does not expect 1 argument(s)." so I am sending you a link to the compressed .etl file. Thanks for your help. https://skydrive.live.com/?cid=0d8f89132a995684#!/?cid=0d8f89132a995684&sc=documents&uc=1&id=D8F89132A995684%21325 Greg