If you have the option of memory swamp(you didn't mention it) turn it off also.I took a look at your owners manual for you board on page 12 it tells how to reset the bios....give it a try,and don't forget to set the clock after wards in the bios.
I don't even have my own board manual any more.. Gonna DL it and check out what this Memory swamp is.
http://www.retrevo.com/search/v2/jsp/mytrevo/myTrevo.jsp?page=manThis is the correct manual for my board
Turn off the lba mode for your drive(s) also.
Make sure hyperthreading is set to auto.
Then set what you want to boot from.
select your graphics-either agp,or pci.
I did not see any lba mode
Hypertrading is ON
Boot is Boot first hardisk Winxp (i can press F11 to select another)
Graphic is on AGP only.
About the power supply... i don't know whats normal..
When i built this computer i saw it like playing whit Lego's...
When you boot the live usb does it do anything,or is the screen blank?
It starts to load normal except it stops half way and drops to a command line (or terminal)