•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
•IF you have Premiere Elements version 10 and an nVidia card
•nVidia Driver Rollback PreElements-10 http://forums.adobe.com/thread/1317675
Are you saying that all you did was to reinstall Premiere Elements 10 on the same computer? The video card/graphics card was the same before and after the reinstall? There is a serious Premiere Elements 10/NVIDIA GeForce issue, and I just want to make sure that you are not caught up in that issue. See the fullest details and information on this in the Announcement at the top of this forum.
What worked before the reinstall of Premiere Elements 10
a. Premiere Elements 10 as a whole
b. The playback of this specific AVCHD file in Premiere Elements 10?
If you are using this never before used AVCHD file in the reinstalled Premiere Elements 10, there is always that possibility that you are now using AVCHD.avi which is not supported by Premiere Elements. AVCHD video compression is supported but not the specific combo of AVCHD.avi.
Please review, consider, and clarify and then we will customize a troubleshooting to get to the core of the matter.