Windows XP crashes compleet black screen

Question

When using Lightroom in the develop mode, windows crashes complete, the screen turns black and the computer is off.
I imported about 300 pictures in a existing data base and when I was correcting the pictures in the develop mode my computer crashes.
Then I made a new data base with only those pictures and it happened again.
Black computer off.
This is a big problem for me.
Met vriendelijke groeten,
Wilco van der Lugt

Answer 1

The kind of problem you describe is, without exception, indicative of a low-level problem, either in the operating system itself (very unlikely, XP is extremely mature by now), some drivers that get used (very, very likely), or a hardware defect (unlikely).
What you do triggers "a condition", and that condition results in what you see.
No user application (such as Lightroom) can kill a machine the way you describe by itself. This is not to say that Lightroom does not contribute, but ultimately at fault is something at a much, much lower level.
Suggestion: Update the operating system, update all drivers, run hardware diagnostic tests.
Further, try running the operating system in "Safe Mode" (which will disable a number of third-party drivers and falls back to non-optimal, but extremely well-tested base drivers).
[Just some trivia: A long, long time ago, I ran into a problem where the computer would spontaneously turn off. It turned out that my power supply simply was not equipped to handle the load put onto it. Net effect: Hard power off, initiated by the power supply.]