cpu fan not starting properly, loud noise at start up

[191jordan]

Having an issue with a new custom system build I purchased recently. It has started making a loud noise at start up (when ASUS screen appears). I opened the panel and saw the CPU fan try to start twice, then when it starts properly the loud noise appears. Any ideas what might be the problem?

Video: CPU fan at start up

System:
Intel i5-4460
ASUS H81M-Plus mobo
Corsair CX430 Power supply
Samsung DVD drive
Seagate 1TB HDD

 

[Dark Lord of Tech]

Corsair CX430 Power supply

Not Haswell compatible ^


And it's a very poor power supply.

When an Intel Core (i3, i5, i7) processor is idle, it goes into a sleep state that requires less power than when the CPU is active. Since the motherboard voltage regulation modules that provide power to the CPU gets their power from the power supply's +12V rail, these sleep states can dramatically reduce the load on the power supply's +12V rail.

According to Intel's presentation at IDF, the new Haswell processors enter a sleep state called C7 that can drop processor power usage as low as 0.05A. Even if the sleeping CPU is the only load on the +12V rail, most power supplies can handle a load this low. The potential problem comes up when there is still a substantial load on the power supply's non-primary rails (the +3.3V and +5V). If the load on these non-primary rails are above a certain threshold (which varies by PSU), the +12V can go out of spec (voltages greater than +12.6V). If the +12V is out of spec when the motherboard comes out of the sleep state, the PSU's protection may prevent the PSU from running and will cause the power supply to "latch off". This will require the user to cycle the power on their power supply using the power switch on the back of the unit.

While we are still working with Intel on the details of the testing methodology they use to check PSUs for Haswell compatibility, it is already known that a power supply that uses DC to DC for the non-primary rails (the +3.3V and +5V) will not have an issue with the new low power sleep states. This is because a DC to DC buck converter is used to convert +12V to +3.3V and +5V. This means that no matter what load the CPU puts on the power supply, there will always be a load on the +12V because the +12V is required to provide power to +3.3V and +5V.

Corsair utilizes this DC to DC technology in most of their power supplies. Starting with the CX750 and CX750M and moving all of the way through the GS Series, TX and TX-M Series, the HX Series, both the AX Series Gold and AX Series Platinum, and the new AXi Series. So whatever your budget, if you choose Intel's new Haswell processor and wish to utilize the new, low power C7 sleep state, Corsair has a power supply for you.

corsair.com


Here's a quality one made by SEASONIC.

PCPartPicker part list / Price breakdown by merchant

Power Supply: XFX TS 550W 80+ Bronze Certified ATX Power Supply ($59.99 @ Newegg)
Total: $59.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-07-28 22:30 EDT-0400

 

[191jordan]

Thanks. So is the Corsair dangerous for my system then?

 

[Dark Lord of Tech]

Not the right spec to run it.

Not compatible with the CPU and poor quality.

 

[Dark Lord of Tech]

PCPartPicker part list / Price breakdown by merchant

Power Supply: XFX TS 550W 80+ Bronze Certified ATX Power Supply ($59.99 @ Newegg)
Total: $59.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-07-28 23:01 EDT-0400