Even when I burned the disc without using under run protection the computer crashed...

I've made coasters before, it happens sometimes...That's no big deal to me.

The real issue is my computer crashing...Why would my computer crash in the middle of a burn?

>The real issue is my computer crashing...Why would my computer crash in the middle of a burn?

Does the app crash or do you get the dreaded blue-screen-of-death (BSOD)?

If BSOD, you probably have a hardware related problem and/or hardware drivers. Windows is getting pretty good at trapping software crashes and handling them without crashing. But hardware is still its achilles heel. Basically, Microsoft made a fatal decision some years ago to treat certain hardware errors as "the error has already happened so there is nothing we can do about it so we need to shut down totally". (Unlike the Mac, Unix, Linux et al., which is why Windows cannot compete at the high-end reliability shops, but that is OT.)

Curing BSOD is difficult, but at least you know its burner-related:

1) Check for IRQ conflicts.

2) Try uninstalling and reinstalling your burner-related software (having more than one burner-related software app is a well-known high-probability-of-problems, so try just one). Since Windows is absolutely terrible at cleaning up after itself, try something like Norton Utilities to examine your registry and fix any problems. If you've never done this and you've installed at least one Microsoft app, you almost certainly have them.

3) Go to your nearest superstore and buy another burner. Install it and see if that helps. Take it back when done. (Some might find this unethical, but it once solved a 100 hr burner sleuthing exercise for me several years back. That time I kept the new burner and threw the old one off a large building.)

4) Suck it up and reformat your drive and reinstall windows. Then install your burner software and see what happens.

P.S. Its almost certainly nothing to do with buffer underrun, so activate it and leave it on. It'll save coasters.

Oh yeah, test with rewritables. No need to waste money, even if its only 20cents/coaster.

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Update: I'm sorry, I didn't read your initial post well enough. I rechecked it and have additional comments:

So you do have a BSOD. And its related to a new install. Have you run a "Windows update" to be sure you have all the latest service packs? Try it with and without the service packs. I know the Windows media player just came out with a big update that included portions of Roxio. Perhaps the additional burner driver is causing conflicts.

Try a google search on "kmode_exception_not_handled". My first link led to a sex pirate page. My second link led to a Microsoft help page discussing virus infections. My 3rd link led to a Microsoft help page discussing an older ASPI driver. I expanded the search to "kmode_exception_not_handled CD burner" and found a blog reporting the same problem, and several other pages with reports and patches.

Theese links are all specific to whichever version of Windows you're running, so you'll need to take over the search from here.

Since you reinstalled Windows you may have replace a Vegas DLL or something with the original Windows file. Reinstall Vegas.

Fixed it!

As it turns out my CPU was simply overheating...

I replaced my cpu fan and everything is working fine now...

Apparently the CPU was becoming unstable due to heat issues caused by a poor contact between the heat sink and the top of the processor.

This instability was causing the information being written to RAM during RAM intensive processes, like burning a disk, to be corrupted, and once the CPU got ot 68 degrees celsius the processor would shut itself down to keep from doing permanent damage...

Thanks for all of the suggestions...