VirtualBox WinXP-image keeps on rebooting

I have two different XP-guest-images that are restarting in a loop. They can start in safemode, but not normal.

I have tried to play with the settings. Turning ON and OFF almost everything I see.

Now I asked the person making one of the images to start from scratch. He did that, but I get the same result.

Tell me what you need of LOGs etc. to help you help me !! Thanks!

PS: I give this one 500 because I am in a hurry! These images are supposed to work tomorrow.
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What is the exact host system?
Was virtualbox release?
What exactly do you call "loop". Does the XP shutdown? Or crash? Or does virtualbox crash completely?
hke72Author Commented:
I found the bug after choosing F8 on startup and "Disable automatic restart on system failure"
Then some Googeling and wolla :
The problem was that the images were created on DELL M4400 with a certen CPU and then transfered to other PC's where it did not work.

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