Alienware M5500i-r3 Drivers

I have an Alienware Area 51 m5500i-R3 laptop. The internet works when I am on my home connection but when I am at work (where there is proven internet in the area where I am working) my laptop can't find the signal. It says that it can't locate an IP address. Do I need to update my internet driver? Why would I have to if it works at home? I have wireless at home and typed in the wireless code. DOWNLOAD DRIVERS: ALIENWARE M5500 WIRELESS. Lan card optional device, pc part number, microsoft agent microsoft employee, easy driver pro, references quick links. Guide dell wireless. Dell precision 5510 workstation review.

Drivers Alienware M5500i-r3 15.6
Hi, I got this issue relating on my Laptop Soundcard which I cannot resolve. At that time my laptop is working perfectly but then my sound card just disappear after 3 days not working with the box. I then reformat the box hoping to have my sound back, guess what it doesn't work. I have all the correct drivers and I'm 100% sure did not add any hardwares during that time, no dropping, no viruses (I assume, updated free AVG) if I must say there's no issues at all. Then I took it to the local technician, they didn't have a clue either, they recommend a hardware repairing (no guarantee) but I refuse.
I took it back home and turn on the laptop to see there a new hardware found, I put my drivers CD and install it right away so there I was got my sound to working again. Until I was out of town for a few days and left my laptop untouch and now here it is again, turn on the laptop and sound gone again. It is truly weird and annoyance and my question is: is this hardware issue? or software? and how am I about to solve this if the technician can't help me... I'm just wondering has anyone ever encounter this issue before? please guide me
Alienware
m5500i-R3
Intel Core2Duo T7400
1GB
GForce Go 7600 256MB
Intel High Definition Sound
I took it back home and turn on the laptop to see there a new hardware found, I put my drivers CD and install it right away so there I was got my sound to working again. Until I was out of town for a few days and left my laptop untouch and now here it is again, turn on the laptop and sound gone again. It is truly weird and annoyance and my question is: is this hardware issue? or software? and how am I about to solve this if the technician can't help me... I'm just wondering has anyone ever encounter this issue before? please guide me
Alienware
m5500i-R3
Intel Core2Duo T7400
1GB
GForce Go 7600 256MB
Intel High Definition Sound
