Motherboard: GA-EP45-UD3P Rev 1.6
CPU: Core 2 Duo E7500 (stock 266x11 = 2.93GHz)
RAM: 8GB (4x2GB) OCZ Gold DDR2 800 (5-5-5-18)
I was using the stock HSF for the E7500 but I was concerned about the pop-in mounting system so I opted for a nice big Zalman heatsink (CNPS9500AT).
Before I installed this I was running a very slight and stable overclock of just 273x11 (to get up to 3.0GHz). After installing the Zalman HSF, my system won't boot if the CPU Host Clock Control setting is enabled. Even if I don't change the CPU Host Frequency from it's default of 266, it will still fail to boot. Other settings in the M.I.T. menu don't cause this problem (I can change the multipliers, voltages, RAM timings, etc, and it will still boot fine). This is incredibly baffling to me because the only electrical difference would the the Zalman fan vs the Intel fan, but the CPU fan control setting is under the PC Health Status menu, changes to which also don't cause boot problems.
It's Prime95 stable with the default settings but I would really like to try some serious overclocking now that it runs so much cooler (load temp is 48C, whereas it was 64C with the stock HSF).
Any help would be greatly appreciated.
CPU: Core 2 Duo E7500 (stock 266x11 = 2.93GHz)
RAM: 8GB (4x2GB) OCZ Gold DDR2 800 (5-5-5-18)
I was using the stock HSF for the E7500 but I was concerned about the pop-in mounting system so I opted for a nice big Zalman heatsink (CNPS9500AT).
Before I installed this I was running a very slight and stable overclock of just 273x11 (to get up to 3.0GHz). After installing the Zalman HSF, my system won't boot if the CPU Host Clock Control setting is enabled. Even if I don't change the CPU Host Frequency from it's default of 266, it will still fail to boot. Other settings in the M.I.T. menu don't cause this problem (I can change the multipliers, voltages, RAM timings, etc, and it will still boot fine). This is incredibly baffling to me because the only electrical difference would the the Zalman fan vs the Intel fan, but the CPU fan control setting is under the PC Health Status menu, changes to which also don't cause boot problems.
It's Prime95 stable with the default settings but I would really like to try some serious overclocking now that it runs so much cooler (load temp is 48C, whereas it was 64C with the stock HSF).
Any help would be greatly appreciated.
Comment