On more expensive board models, all the fan headers should be able to control fans with both methods. 'NC' means Not Connected, so the manufacturer didn't implement PWM control on those headers, presumably for cost-saving. Ok thanks for the help i feel alot more confident doing this. The SYSFAN headers can only control the fan speed via DC voltage, despite having a 4-pin fan header. if you unplug it too soon, you won't damage anything but will keep taking that much time until everything is tested and done right. So basically don't be scared if the system takes a minute or two to start the very first time. so sometimes BIOSes upload multiple such "microcode" patches into processors and test uploads and reset the CPU multiple times until they're up to the latest version of microcode stored inside the bios.Īlso, most bioses also "train" the memory, they basically detect new sticks installed and test those sticks with various frequencies and timings to make sure there's no errors with them, and then settle on the best timings compatible with the presets built into the ram sticks, or with the xmp/docp profiles stored inside ram sticks.so that can also take some time. The train from Milano Centrale takes 55 minutes to Turin Porta Susa, are you sure a car would be faster I don't know how long the bus ride to Milano Centrale is, but I'd look up the driving times on viamichelin before making a decision. It ceased working on the next power on when I installed the MB into the case and connected the disks, case, and case fans. RGB LEDs under the chipset spreader are not working, although they worked during my first POST with only CPU, GPU, RAM, and PSU connected. it can take up to 1-2 minutes to start, while not seeing anything on screen.īIOSes contain microcode patches (code that runs inside the processor) which sometimes needs to be "uploaded" in the cpu itself, if the cpu has older version of this code. B550 Tomahawk chipset RGB and fan control issue. I suppose it is possible for some motherboards to not start without a fan installed there, but should be a small number of boards.Īlso just a note, it's perfectly normal for motherboards to take a much longer time to start up the first time they're started with a particular processor. It should boot up but make a beep or have some message on the screen, warning fan not detected press F1 to continue, something like that.
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