hi.
I purchased an T5600 (sl9u3).
The latptop not starts. When I push start button the lights of Power and HD lights on, but the scren stays black and it reboots all time.
I search in google, and i saw two revisions of the T5600. sl9u3 and SL9SG.
Both are "identical":
http://www.cpu-world.com/sspec/SL/SL9U3.html
http://www.cpu-world.com/sspec/SL/SL9SG.html
I 've update to Alienware BIOS 1.19W.zip.
It's the CPU Faulty or unsuported by my motherboard? Maby should I upgrade to a newer Bios¿
(Excuse my bad english)