New computers are loaded with fragmentation and, believe it or not, spyware/bloatware.
Try running a program like Advanced System Care Free and see if it makes a difference.
Also make sure all of your drives are formatted NTFS and not FAT32, as they come from the factory. FAT32 drives have file size limitations that frequently choke video work.
Is your project file on your C drive? Why aren't you storing it on your external drive, with your media? If you store it in its own folder on your second hard drive, you'll get much faster and more stable performance.
Ok I downloaded the Advanced System Care and made sure all my drives were NTFS, but that didn't work. I'm still having the same probelm. I uninstalled and then reinstalled it before, about 3 times so now I just don't know what to do. Thanks for your help
Sounds like you'd better call Adobe Tech Support. You've got something going on with your system that we can't troubleshoot here on this forum. Sorry.
Meantime, have you tried the free trial of version 10 yet? It includes a version designed specifically for Windows 7 64-bit.
No I haven't but i'll look into it, Thanks!