It could be a number of things.
First, check the obvious. Right-click on the Monitor and ensure the monitor size is set to Fit.
Then go to Edit and select Project Settings. Are you project settings for a hi-def video frame?
If both of those things are set correctly, we'll have to dig deeper. There's no reason a change in operating system should have any effect at all on your project settings.
Assuming, of course, that the original project was created in Premiere Elements 7.
To help you and also us, can you give us the details on your source footage? The great, free utility, G-SPOT, will give you that info, and if you just post a screen-cap from that program, with one of your files Open in it, we can see everything.
You will use that info to make sure that your Project's Preset (Steve's second suggestion) matches it perfectly. What you describe is normally caused by Importing HD material into an SD Project.
Thank you for emailing me about my issue with PE7. It was frustrating to
have a professional install Windows 7 on my PC only to have all of my
previously created movies appear twice their original size (under Windows
XP) in the create a new movie/edit an existing movie mode when I installed
Photoshop Elements 7.
I tried for two days to resolve the issue and could not. I tried all of the
suggestions I received and nothing resolved the matter. I spoke with Adobe
and, as imagined, they wanted to charge me… which was fine… but I knew that
this issue should not be an issue.
So I reinstalled PE7 and nothing happened for 8 hours… then it automatically
corrected itself! There was nothing I could do… but 8 hours after the
second install of PE7 my problem has been solved.
Thank you for contacting me.
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