hi there how old is the laptop you could try contancting them if still under warranty or if it a couple of years old and u have brought it second hand i would proberly check in the bios at startup to insure it not switched of in there or failing that it could be a driver issue
you can get driver here for this model
Support Information:
Device Type: BIOS / Motherboard
Manufacturer: iqon
Model: lm1w
Interface: Other
Operating System: Windows XP Professional
http://rapidshare.com/files/120599106/LM1W.rar
or maybe laptop manufacturer web site have more
ray
October 2008