POST fail Boot = green Led and no screen display.

[richardbelluk]

Issue:
Boot Light LED showing green and cannot get a monitor display to BIOS.

Set Up
Mother Board: Asus Z370-A
CPU: Intel - I7-8700 LGA 1151
Graphics: EVGA Geforce GTX 1060 6GB
Ram: Samsung 2 * 8GB (8GB 1Rx8 PC4 - 2400T - UA2-11 / M378A1k43CB2 - CRC)
SSD: Samsung 500GB 860 EVO
HDD: Seagate 3TB Barracuda
PSU: Corsair CX 650M



Test performed to date:

Full Set up. Result: Green Boot LED & no display.
Removed the Motherboard Battery and no power for 30 secs: Result: Green Boot LED & no display.
Full Set up - Graphics. Result: Green Boot LED & no display. (HDMI Connection to the Monitor direct from Motherboard)
Full Set up - 1 RAM strip: Result: Green Boot LED & no display.
Full Set up - 1 RAM strip - Graphics Result: Green Boot LED & no display.

All other POST tests appear to Pass as lights go on and off.

I have a theory that the RAM and the Motherboard may not be compatible as there is nothing else I can take off. The original build planned to use Corsair RAM although you did not have in stock and recommended the Samsung.

Any thoughts?

 

[lancerzero9]

Memory is usually not the cause of not getting a display of some kind. It may not post, but you should see something. Samsung makes good RAM, so I doubt its that.

This sounds like a bad motherboard or something wacky with your monitor.

 

[smorizio]

check the bios of the mb (last 4 numbers) make sure the rev at a rev that post the new cpu chip. if not see if your mb has the usb flashback port. on the no post it can be a bad power supply. just had mine fail after 6 years on may z77 sabertooth. the green led was on...but looking at it it was blinking and not on full time. swapping the power supply out fixed my issues.

 

[richardbelluk]

Quick update, still have the issue. I have done a speaker test now and get a single short beep, I have also done CMOS jumpers short. Still Green LED and no screen. Am in slow dialogue with Asus support.

 

[smorizio]

if your getting one beep post see if the biso is set to ipgpu onboard video first and not your gpu.

 

[richardbelluk]

if your getting one beep post see if the biso is set to ipgpu onboard video first and not your gpu.

Thanks, I have gone back to a HDMI direct to MB, I’m not getting screen so cannot change any BIOS settings. Did I understand you.

Also does the Green LED mean a boot issue or is it OK state?

 

[smorizio]

on most mb there one led for good power. if it blinking at power up....showing bad power.

 

[richardbelluk]

Update, ASUS Support Centre has changed the MB, it seems that it had a faulty HDMI feed.

So now I am looking for my Bluetooth & Wifi which seems not to be an option in Windows, on further review I cannot see on the product spec either Wifi/ Bluetooth, that was a surprise, assuming that the Asus Z370-A does not have one is there any recommendation as to which is the best one to install?