new MSI Z87I GAMING AC won't boot

[privatebeavis]

I'm currently building a PC and I've got some parts but cannot get the motherboard to boot.

I've been trying a few different things to try figure out the issue using the troubleshooting/breadboard posts.

Basically when I press the start switch nothing happens, (I have LED on front panel header and doesn't come on and PSU doesn't start)
I've tested the powersupply by shorting the green/black on the 24pin header and the pins look like they have 12v etc without load (it was from old machine that was working before but sitting used for couple of years)

I don't have a motherboard speaker to test beeps but I've ordered one so that will be my next tests i.e. CPU/HSF only

However I started looking at the specs again today thinking I may have bought incorrect RAM.
THis is motherboard: MSI Z87I GAMING AC
http://www.msi.com/product/mb/Z87I-GAMING-AC.html#hero-specification
with memory spec:
- Support two DDR3 1066/1333/1600/1866*/2000*/2133*/2200*/2400*/2600*/2666*/2800*/3000*(*OC) MHz DRAM, 16GB Max
- Dual channel memory architecture
- Supports Intel® Extreme Memory Profile (XMP)
- Supports non-ECC, un-buffered memory

CPU: Intel Core i7 i7-4790K CPU (Quad Core 4GHz, Socket H3 LGA-1150)

Also the RAM i got was: HyperX Savage 16 GB (2 x 8 GB) 2400 MHz DDR3 CL11 DIMM XMP Memory Module
http://www.amazon.co.uk/gp/product/B00N9PVZ3O?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s01
I belive I checked all the non-EEC/unbuffered bits before I bought.

However the bit I missed was the MSI *! on 2400 i.e. Overclocking at this speed.

So my question is with motherboard only supporting the 2400 for overclocking would this be the reason it wouldn't boot. i.e. do you need to reconfigure the BIOS (chicken and egg come to mind though) before it will support 2400 or should it just work fine perhaps running at slower speed?

If all ok then I next steps are:
1. Test with speaker when I get it
2. Start buying replacement parts... the big question is what do I buy first!! another PSU cos its cheapest, then different motherboard (hoping its not a dodgy CPU!)

 

[shivababbli]

yes underclock the RAM to use around 1.5 volts and it should work fine

 

[MarkW]

Make sure the power button is firmly plugged in. Alternatively, you can remove the connector from the motherboard, and then use a flathead screwdriver to short those same 2 pins together for half a second. If the motherboard powers up, your power switch could be defective.

If that doesn't work, make sure the power supply is connected to the wall.
Make sure the 24 pin *and* the 4 or 8 pin (depends on your motherboard) power connector is attached to your motherboard.
If you are still getting no power, remove everything you can from the system. Even the mouse and keyboard. See if it will power up with only a CPU, RAM and a video card. If it does, power down using the switch on the back of the power supply to shut the power off. Then attach one item, and see if it will still boot. Keep going until you figure out what is stopping it.

If it will not power up with everything removed, remove the video card, and see if that changes anything. If you still cannot get it to boot, I would order a new power supply, and see what happens with it. If the motherboard fails to boot with the second power supply, then the motherboard may be defective.

These are hard problems to resolve. They take a lot of time and effort, but eventually, you can isolate what is causing the problem, and replace it.

Your RAM should default to 1600 unless you have changed the setting in the BIOS to use XMP, which should make it run at 2400.

 

[sora]

yes underclock the RAM to use around 1.5 volts and it should work fine

This, although the motherboard should have the potential to automatically underclock the RAM.

 

[privatebeavis]

I sent MSI support a mail and turns out the BIOS version on my board doesnt support the CPU i got without BIOS update!
Here's response which might be useful for someone else:
"this MB can support i7-4790K processor since BIOS E7887IMS.130. But according to the serial number you offered, the current bios version of the MB is E7887IMS.100, so you need to install a lower level processor to boot up the MB, then update the BIOS to the latest version from our website. Only after the bios has flashed sucessfully, you can install the i7-4790K processor to use"
So I'll have to get a cheap celeron or pentium to update the BIOS