Are you working off your C drive? How much free, defragmented space is on your C drive?
What type of camcorder did this video come from?
Are there red lines on the timeline above your video clips? Press Enter to render these files (the red line will turn green) and see if your performance improves.
Hey thanks so much for the answers ...yes there was a red line above my clips and its rendering as i sent this... thanks
but how do i see what drive I'm on and how do i switch it
Consider this a little back seat driving.
What is the operating system of your computer? Is it Windows XP or Windows Vista or the new Windows 7? Is it 32 bit or the newer 64 bit type? Have you looked at the system requirements in the FAQ section of this forum (to the right of the user questions)?
As for getting at which drives the computer has, maybe try this:
Can you get to the Disc Defragmenter of the computer? It is usually found in Windows XP, Start/Programs/Accessories/System Tools/Disc Defragmenter. Open that and look to see what it lists for drives and each drives Capacity and Free Space. Besides a C drive, do you see any external hard drives?
Next, Start/Program/Accessories/System Tools/System Informaton, scroll down the list. What does it say for Total Physical Memory and Available Physical Memory.
Do you know about the Task Manager Performance as a tool for evaluating computer memory needs? If not, once we know your computer operating system, we can direct you to the appropriate how to links.
There are all sorts of possibilities here from preview files piling up in the local drive, not enough computer resources in the first place, source and format of video, and so on. When did you defragment your computer last?
Maybe lets start here and see where that leads along with SG's questions & answers.
This ARTICLE might give you some clues as to what is happening, if your program crashes, or stops responding. You will have to follow some leads, but will likely find some things that are happening, when the program, or system hangs.