•What is your exact brand/model graphics adapter (ATI or nVidia or ???)
•What is your exact graphics adapter driver version?
•Have you gone to the vendor web site to check for a newer driver?
•For Windows, do NOT rely on Windows Update to have current driver information
•-you need to go direct to the vendor web site and check updates for yourself
•ATI Driver Autodetect http://support.amd.com/en-us/download/auto-detect-tool
•nVidia Driver Downloads http://www.nvidia.com/Download/index.aspx?lang=en-us
Do you have dual graphics adapters?
Go to the Windows Control Panel and select Hardware and Sound and then select Device Manager... In Device manager you click the + sign to the left of Display Adapters... and see if 2 are listed
IF YES, read below
-link to why http://forums.adobe.com/message/4685328
What computer operating system is your Premiere Elements running on? I am going to assume Windows 7, 8, or 8.1 64 bit/NTSC Setup.
How long ago were you able to use Premiere Elements 11?
Have you determined if the problem exists with and without the antivirus disabled?
As a first pass at this, please delete the Adobe Premiere Elements Prefs file and, if necessary, the whole 11.0 Folder in which it exists.
Local Disk C
and in the 11.0 Folder is the Adobe Premiere Elements Prefs file that you delete. If that does not work, then delete the whole 11.0 Folder
in which the Adobe Premiere Elements Prefs file exists. Be sure to be working with Folder Option Show Hidden Files, Folders, and Drives
active so that you can see the complete path cited.
Also, look for pile ups of preview files, conformed audio, and conformed video files....if at the default location...
Preview Files. Libraries/Documents/Adobe/Premiere Elements/Adobe/11.0 and the Adobe Premiere Elements Previews File Folder
Conformed Audio: Libraries/Documents/Adobe/Premiere Elements/Adobe/11.0 and the Media Cache Files Folder
Conformed Video: Edit Menu/Preferences/Media and the Media Cache Database area
We will start here and watch for your results.