Check your power supply on your system sounds like you need a min of 1k watts most likely 1200, Check your mother board to make sure you have switchs set to read the ram you have in the slots if they are changable, Make sure to read your mother board owners manual to ensure you have the ram in the correct order specified in the book. Check mother board to make sure it can read 8g ram. Make sure your MB is Vista 64bit compatible.



Sounds like you have a nice system I have been specing a 64bit system to start 5 boxing on so once you get stable please let us know how it is running.



If you get a chance to post your full system profile hardware that would be awesome its been a few years since I built a computer so I'll be posting my final chosen items for people to give me imput if this looks like the Beast I'm hoping for.



Good luck with the problems



Avatari



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