Well, by "crashing", I'm going to assume it gave you some sort of error on the screen, can you post that for us? (or just give us the "gist" of it?)
Here's what I would suggest;
Check the MD5 sum of the ISO you downloaded.
You should be able to do that with either md5summer
for windows or just "md5sum -b /path/to/your/fedora.iso
" on Linux. If that MD5 sum you get doesn't match what the website says the MD5 sum should be, re-download the ISO.
Use the installer to create two primary partitions
One should be 2GB for swap, and the second should be the rest of the disk (that'll be for the Operating System itself).
Normally I don't recommend "one big filesystem" for the whole O.S., but in the interests of troubleshooting, I'm thinking you might be running out of space (that is, if you've partitioned-out for filesystems like /opt, /usr, /var and so forth).
The "MBR"? I don't think you know what that word means.
That's "Master Boot Record
". Maybe you meant "what kind of boot loader?" (like LILO or GRUB?)
Again, whatever error output you're getting would be nice.
Test your RAM.
Bad RAM can cause all sorts of strange problems. memtest86+
would really help you out here.