Triple boot XP W7 W8

I installed W8 Pro alongside XP-SP2 and W7.

No problem booting under W7 and W8 in triple boot mode. I used EasyBCD to get everything to work nicely.

However, cannot complete launch of XP. When I select it, it starts off normally, displays the XP logo on black background, then the logo on blue background. Afterwards, this logo disappears and there's a bare blue background. After a while, I hear the opening jingle of XP, but still nothing besides an empty blue background.

After a minute or two, the blue xp logo appears with the jingle which accompanies a shutdown. It then gets into an unending loop: the logo remains and every 30 seconds or so, the shutdown jingle plays.

I rebooted and selected Safe mode under XP. Here again, things start off normally with the listing of files on a black background. When we get to the xp logo on a blue background, the screen blinks perpetually in a loop. The xp logo is always there.

I did not interfere at all during the boot process in either of the two modes.

Sounds strange. Any idea?