The other day while using Vegas to encode an mpeg file into a Real Media, half way into the process, the computer rebooted on me just like that. When the computer was rebooted, I retried the process, but with the same results. I retried the same process in Batch Converter 5.0, and again it rebooted my system. So my last try was doing the encoding in Adobe Premier 6.0, and to my surprise, it didn't crash? What could be the problem here? Below are my computer specs, thanks for your time.

Operating System
Platform: Windows 2000
Version: 5.00.2195 (Service Pack 2)

Processor
Class: Pentium
Identifier: AuthenticAMD(AMD-K6.2 550mhz)
Number of processors: 1
MMX available: Yes
Streaming SIMD available:No

Display
Primary: 1024x768x16

Memory
Physical memory: 163.3 MB
Paging memory available: 390.8 MB
Virtual memory possible: 2,097.0 MB