What computer operating system is your Premiere Elements 9 running on? And, are you running it from the 9.0.1 Update?
Does the problem exist with and without the antivirus and firewall(s) disabled?
Then the usual
1. Running program from an User Account with Administrative Privileges plus Run As Administrator applied to program's desktop icon?
2. Last version of QuickTime installed on same computer with Premiere Elements?
3. Video card/graphics card driver version up to date according to web site of manufacturer of the card? According to the Device Manager/Display
Adapters, how many video cards/graphics cards does your computer use - 1 or 2?
As a first pass at this, let us delete the Adobe Premiere Elements Prefs file, and, if necessary, the whole 9.0 Folder in which the Adobe Premiere Elements Prefs file exists.
Assuming Windows 7, 8, or 8.1 64 bit computer....
Local Disk C
and, in the 9.0 Folder, is the Adobe Premiere Elements Prefs file that you delete. If necessary, delete the whole 9.0 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 whole path cited.
We will be watching for your results and then decide what next.