Any computer nerds here? Hard reboots

[abaris]

The video card may use more power than the cheap PSU that the computer came with can deliver. The 12V line drops too low and the computer reboots.

That's on my to check list.

But I just noticed another curious thing. Playing a video on Firefox sends CPU usage up to 66 percent, the same video on IE hardly uses any CPU power. Temperatures stay well in the green.

I might just have to switch my standard browser. But that doesn't resolve the ingame issues. What goes way beyond my understanding is, that even playing battles with many effects and objects on the screen doesn't do anything. An ingame cinematic though, which is simply playing a stored bic video, may lead to reboots.