A8N-SLI Deluxe

Hi,

I have updated my computer from an AthlonXP 3200+ to an Athlon64 3200+, using
the Asus A8N-SLI Deluxe motherboard, but ever since I started the new
configuration the computer becomes unresponsive after a few hours (varying from
1 to 27hrs), and even if the computer is idle it will still freeze on me

THe motherboard came with the BIOS version 1010, after the first few time that
the problem occured I tried a to flash it to 1011, and then to 1013, but the
problem still persist

Anyone could give me any idea as to what might cause this

PS. I did a Repair on XP Pro SP2 but to no avail.

PPS When I contacted Asus regarding the problem they told me that it wasn't the
motherboard, but the whole hardware and software did work perfectly on the old
motherboard

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Thank you in Advance

Merci a l'Avance

Martin