Version to install

Hi!

I have a big problem with an Acer Altos G530 server, which randomly gets
hanged with no error, no BOD, nothing, just a black screen. I have been
researching this problem for more than two months, but no success in
diagnosing what's happening. Any help would be appreciated.

any way i have a question and is about the right version i should install on
this computer, this is a Xeon 3,0Ghz processor machine, i am asking if i can
install Windows 2003 Server SBS standard, or i better should install the X64
version for this machine?. And if i install the x86 version, can i use the
x64 drivers?, and viceversa?, thanks in advance may be for this stupid
question, but i am desesperate and i doubt of myself every minute.

Thanks!