I have an epox 4sda+ with p4 1.6a. The system will not post at the default settings. I get an error code 3C "Expasnd compressed BIOS code to DRAM". I then have to set the cpu vcore jumper at +.10 to get the system going. The post screen hardware monitor shows the cpu vcore as only 1.16 volts. It's really amazing that the cpu will run at such low voltage. I have set the cpu voltage to 1.65, ddram vcore at 2.7, fsb at 132, and 4/5 ratio for memory using dip switches. I would like to replace the mobo or cpu under warranty. Any ideas where the problem is? Thanks to all who reply.