My GW will not play on any computer?

So I've been having computer issues lately. I have a 2 year old wal-mart special I upgraded with a better sound and graphics card. Been playing GW just fine until recently. I thought it was the computer taking a crap on me as it ran really slow, took forever to load a program or anything. I could load GW just fine on computer start up but once the game loaded it lagged/froze like you wouldn't believe. I could not get it to run well... quite frankly it acted like I was on worse the 56k connection but I'm actually on Clearwire which is faster then cable or dsl. Because of the way the computer as a whole was acting I purchased a new tower for gaming. Here in lies the problem...

I can't get GW to load. I installed it, it went through the process of connecting to GW successfully after install and downloaded every update... But thats all it will do. When I try to open the game its either froze or completely rebooted my computer.

Is it possible my GW file they have on the servers is corrupt? I've uninstalled and reinstalled several times all with the same result in the end. Its really pissing me off to no end as I missed out on every Nightfall event including the launch of Nightfall...

I'm wondering what my options are at this point? Should I try installing GW from a different disc? Instead of from GW Prophecies should I try and install from Factions? I know my account is on the server but could my disc be trying to dl some crap?

Thoughts... ideas anyone?

Same thing is happening to me only I can log in, but when I am finally in I lag and then when I try to play the game it just freezes up I already posted in another thread about this issue with my computer spec list. I know it can run the game properly. It all started happening when nightfall was put in is all I know before the update it worked just fine.

Mine has been doing this before Nightfall preview events.

on my old computer I could at least log in before it froze... now I can't even get to a log in screen. I can double click the GW icon so it will load the game. it goes to a black screen... freezes and then reboots or I have to manually reboot.