My system also goes "beep, beep, beep, beep". I have been able to power-on only twice out of about 25 attempts and it always does a hard power-off after beginning to install Windows XP Pro. I am frustrated at the lack of answers both from Tyan directly, and the K8WE community.
I hope that I do not have to RMA the MB back to Tyan. If you get any anwers, I would appreciate an email.
Tyan Thunder K8WE s2895A2NRF (w/ no 6-pin power; Bios version 1.03)
Lian-Li PC-201A chassis
2x Opteron 248
1x PNY nVidia Quadro FX 3450
2x Kingston HyperX KRX3200AK2/1G (one per CPU)
Enermax EG851AX-VH(W) 660W PSU EPS+12V Ready