You could also try manually setting your voltage.
I manually set mine to lower than what "Auto" thinks is necessary.
I have my E4300 running @ 9x333 with CPU Voltage of 1.28 by setting it manually.
I tried setting it manually to 1.325 to start but I am not able to keep it up there. Normal stuff under Vista it will stay up all day but run TAT and it takes it down in 3 seconds if you don't allow the CPUs to throttle (e.g. set TAT to full on both processors)
Would you mind going down the list for the Advanced and MIT sections of the bios and filling in your settings?:
Advanced:
Limit CPUID Max to 3 - Disabled
CPU Enhanced Halt - Enabled
CPU Thermal Monitor - Enabled
CPU EIST Function - Enabled
M.I.T.
CPU Host Clock Control - Enable
CPU Host Freq - 333
PCI Exp Freq - 100
Sys Mem Multiplier - 2.0
DRAM - Manual
CAS - 5
RAS to CAS - 5
RAS Precharge - 5
Precharge Delay - 15
System Voltage - Manual
DDR2 Overvolage -
PCI-E Overvoltage -
(G)MCH Overvoltage -
FSB Overvoltage -
CPU Voltage -
And if you changed anything from the default "optimum F7 load" not listed here would you please add/include that as well. (I am presuming the F10 bios)
Thank you