Game crashes in some locations

[GeX221]

When i enter in some locations for example Breka's stronghold my game crashes  and i am made to restart my computer.When i join the game i have only few seconds to make fast teleport to town or my game will crash again.The problem is that i cannot finish class change quest.
I have reinstaled the game and nothing helped.I am not sure but maybe it is DDRAM problem.Does anyone have heard about this problem ?

My cpu specifications :

AMD Athlon 64 3000+
1,79 ghz  
1 GB RAm  400mhz   CL 2.5
GF 6600 GT  
MSI MS-7050 VER 1 Socket 939       
      
Windows XP

[Shabaka]

text error? or BSOD?

[Healthien]

you need to recconect your mouse, take it from usb and put in again

[GeX221]

text error? or BSOD?

No BSOD ,no text error

I am not able to use alt ctrl del doesnt work , alt tab etc  i am forced to restart my CPU

[Kiu]

check ur virtual memory.

ps: yes im a good troll