My 5150 is now 4 months old but has started behaving strangely since yesterday.

It works perfectly as long as it's left alone, but sometimes when I pick it up to move it,
or even just reposition myself while having it in my lap, it just crashes. This also happens when a slight pressure is applied near the touch pad like when moving.
The screen goes blank, and it becomes completely unresponsive.
The powerbutton is still lit, but it sounds as though is in a neverending reboot loop . When this happened first, it showed an error and asked me to restart the system with the Windows CD in. It seemed to work next but the problem still persists although now if I press the power button for a few seconds till it stops, and then turn it on again, it works perfectly .

I have bought this system (all english) in France. Will I be able to get a replacement/ rectify t he problem through dell? I hope to get a fast service.