I have a DP35DP motherboard with 572 BIOS. I just changed the CPU from Q6600 to Q9650 and now the CPU fan runs at full speed continuously and the system will not restart unless it is powered down and cold started. Also, Window is not correctly recognizing the CPU. It shows it as a Xeon III. Otherwise it seems to run fine.
I have read here that many other people are having the same related issues. It seems like a possible solution is to downgrade the BIOS. I have tried a few things and it fails the downgrade. I've tried the .BIO copied to a USB drive. I remove the BIOS jumper, reboot and nothing happened. Just a black screen. I've also tried the .BIO copied to a CR-ROM. I remove the BIOS jumper, reboot and nothing happened. Just a black screen. I've tried the .ISO bootable CD. It started to flash the BIOS but then it failed and rebooted without downgrading.
Does anyone know the ultimate fix for this incompatibility issue? If not, do you at least know how to get this BIOS downgraded? Also, will a CMOS reset possibly fix the issue and allow 572 BIOS to work properly with Q9650?
Thank you.