So... add a new internal hard drive, or use a USB3 external hard drive (USB2 is too slow for video editing)
ONE possibility is this USB3 dock with fan http://www.amazon.com/StarTech-SuperSpeed-Docking-Station-Cooling/dp/B0055PL2YI
What version of Premiere Elements and on what computer operating system is it running including 32 or 64 bit?
What is a description of your computer resources - including free hard drive space (internal and external)?
When you get the low disc space message, are you adding media to a new project or a previously saved closed project? And, what is the computer storage place for the media that you are importing into the project?
a. does the message come even it a file is the first one added to a new project?
b. if you get the message when working in a previously saved closed project, how big is the project at the point?
a. what media are you adding when you get this message - video or stills...please give details as to video, format and duration as well as stills, pixel dimensions and how many.
Let us start here and then decide on what is indicated based on the details of your situation.
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