This log is clean for the most part. Lets look a little deeper..
Run an online scan at
http://www.pandasoftware.com/actives..._principal.htm
Choose the "AutoFix" button. Once thats done..save the activescan log and post it here along with the logs from the following tools..
Download
Silent runners.Vbs http://www.silentrunners.org/
1. Make sure you have any script blocking software disabled
2. Run the program. It will take a few minutes to complete.
3. Once complete it will produce a log named “StartupPrograms” with Your user and date in the filename. Open that txt file and posts it contents in your next post.
Open hijackthis...click...config..misctools. Check the 2 box’s next to "Generate Startup List" and then click "Generate Startup List". Post that log in your next post.
Also please check your event viewer and see which program or APP is causing the crash. Did you add any software or hardware right before this issue appeared? If so...remove it and see if it corrects the problem.