By "...after opening Proe, and trying to set the working directory it shuts down."do you mean the whole computer powers down? Or did you mean Proe closes down?
If you mean that Proe just "goes away", then others might be able to help. I recall something about this on the exploder. Seems it was somehow related to the display of the default web page within Proe.
If the laptop powers down by itself, then I agree, what you describe sounds more like a hardware problem. I had a similar case witha Dell laptop. The internal cooling fan hadgone out and when started from a cold state the computer would work fine for a period of time until the computer warmed up. Doing graphic intensive work (added cpu cycles/RAM/GPU)would cause the system to heat up quicker and when the magic temperature is reached... POP, down it goes. Failure of the GPU itself is more likely to cause fouled screen display than a full blown shutdown. You may be able to test the system cooling by visually observing the fan or by placing a light tissue over the cooling exhaust vents when the system is up to temp to check for air flow.
Dell has diagnostics programs on a separate partition on their laptops. I would be suprised if HP did not have something similar.If so, aslong as that service partition still exists you can probably boot to it and run the diagnostics. Or maybe they have a downloadable diagnostic app.
Hope this helps.
Mark GrotheCAD/CAM Manager
Our machines started doing this lately. Haved you looked at the std.out & std.err files? Ours had an error code that I never saw before this problem and seems to be related to the browser loading. We fixed our problem by setting the config.pro option "web_browser_homepage" to "about:blank" (minus quotes). HTH.