Hello Tabahm, please check on the visual BIOS under “power tab”, depending of the processor and the power supply, there should be some options to enable or disable the processor’s power states.
If you find them,please disable C6/C7 power states, C3 should be enable.
Also, please check if the power supply you are using is Haswell compatible. The following is the list of Intel PSU Design Guide:
2. Go to the top right hand where it says 12V2 Min-load
3. From the Drop down select the “Yes” option
4. The list displayed will be the latest list of PSUs that meet Intel’s requirements
Let me know.
We have seen a lot of cases where customers are experiencing this same issue and it is because the power supply is not Haswell ready.
As far as we know, there is no workaround for this. You can try to remove the CMOS battery or test the system out of the chassis, but we are not sure that is going to fix the problem.