Its worth pointing out here that the Phenom does NOT officially support 4 1066 DIMMs, though some can get them working. I suspect that is your problem here. Officially its a max of 2 Dimms (one per channel running dual channel).
But post your specs as Saint19 requested. Some have succeeded with 4 1066 and maybe saint or someone else with more experience with this topic can walk you through it.
This pdf offers some of the extended settings used on an intel board. At no point does it mention if the chips have been tested on an amd platform.
One thing is clear, you need to set for 2.1v and with amd platform you may need to kick up the cpu memory controller voltage another 0.1 volt to get it to work with 4 dimm chips. The timings used should be usefull since they will have to be set manually. good luck
CAS# latency - 5T
RAS to CAS R/W Delay - 5T
Row Precharge Time - 5T
Minimum RAS Active Time - 15T
1T/2T Command Timing - 2T
TwTr Command Delay - 3T or 4T
Trfc0 for DIMM1 - 195ns (tried 127 as well)
Trfc2 for DIMM2 - 195ns (tried 127 as well)
Trfc1 for DIMM3 - 127ns
Trfc3 for DIMM4 - 127ns
Write Recovery Time - 8T
Precharge Time - 3T
Row Cycle Time - 42T
RAS to RAS Delay - 4T
Increase DDR2 Voltage to 2.0V (tried 2.1V)
Northbridge Volt Control to 1.4V
SouthBridge Volt Control to normal
CPU NB VID Control to normal (tried 1.25V messed my box up)
CPU Voltage Control to normal (tried 1.45V but got blck screen of death)
**When i have DDR2 Voltage to 2.1V i get into windows and blue screen... When i do 2.0 it just locks up while its loading windows