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Computer Will Not POST On Cold Start-Up

Syntaxx
By Syntaxx
in Troubleshooting
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Hello everyone! I have been wanting to make a post for quite some time. I built this computer a few years ago, and everything was perfect right out of the gate; except for a custom water loop with a leaky pump :(.

 

I want to say about a year ago I started having this issues where when I press the power button, it does not POST.

BUT if I hit the restart button on the motherboard, it will.

I did not change any hardware prior to this. (I did change from my custom loop to an AIO, but I do not remember if this problem started before or after)

I am hoping to build a new computer here soon and will be looking to sell this one and would really like to figure out this issue before-hand.

 

I have:

Cleared CMOS

Re-seated all power cables

Re-seated all ram

Re-seated GPU

Re-seated CPU/AIO

Updated BIOS

Checked all front cable connectors

 

I've been off and on troubleshooting this for a year so I may not remember exactly what I have all done or not done. But ANY help and recommendations would be greatly appreciated!

 

Windows 10 64-bit

Intel Core i7 7700K @ 4.20GHz

ASUSTeK COMPUTER INC. MAXIMUS IX FORMULA (LGA1151)

3071MB NVIDIA GeForce GTX 1080 Ti

32.0GB Dual-Channel Unknown @ 1098MHz (15-15-15-36) (Should be CORSAIR Vengeance RGB DRAM 32GB (4 x 8GB) DDR4 3466, not sure why it says unknown, could just be because I used Speccy to get the information)

465GB Samsung SSD 850 EVO 500GB (SSD)

931GB Western Digital WDC WD1002FAEX-00Z3A0 (SATA)

 

Speccy64_z7n5utS3B2.png

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https://linustechtips.com/topic/1358315-computer-will-not-post-on-cold-start-up/
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Posted

I have the exact same problem with my work PC. But I have to hit the reset button 5 to 15 times. It was a very old system so I just upgraded it this week, replaced everything but the GPU, HDD (which is a slave now, New windows install on the new NVMe) and the CPU cooler, and it's STILL doing it. This morning it just refuses to boot, I've been trying for almost 2 hours now. It came on once and windows wanted to do a diagnostic, I clicked continue to windows and it's back to not booting.

 

I have tried a different GPU and completely unplugging the old HDD but did not change anything. When it does boot it works great

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On 7/21/2021 at 6:49 AM, Syntaxx said:

I want to say about a year ago I started having this issues where when I press the power button, it does not POST.

BUT if I hit the restart button on the motherboard, it will.

Could you elaborate a bit more on what exactly happens when you do a cold start?

 

By 'the computer does not POST' do you mean the computer powers on and fails POST resulting in the computer turning back off?

Or do you mean the computer literally does not turn on at all. As in, the power button may as well not be plugged into the mobo because it doesn't do anything?

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3 minutes ago, Mavflight09 said:

Could you elaborate a bit more on what exactly happens when you do a cold start?

 

By 'the computer does not POST' do you mean the computer powers on and fails POST resulting in the computer turning back off?

Or do you mean the computer literally does not turn on at all. As in, the power button may as well not be plugged into the mobo because it doesn't do anything?

I posted a video of what it does. I hit the power button (either the case power button, or the mobo) everything turns on, all fans, just no signal to the monitor. No POST. Mobo gives "00" code. Once I hit the restart button, it POSTs just fine like it should do if I hit the power button the first time.

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8 minutes ago, Syntaxx said:

I posted a video of what it does. I hit the power button (either the case power button, or the mobo) everything turns on, all fans, just no signal to the monitor. No POST. Mobo gives "00" code. Once I hit the restart button, it POSTs just fine like it should do if I hit the power button the first time.

Ah, sorry, I didn't see the link.

I found something in the mobo's manual that you could check real quick.

It's typically used by extreme overclockers who have trouble starting their computers when the cpu is at -100C or whatever.

It won't hurt to enable it and may allow your computer to cold start.

image.thumb.png.9aa85af2a75f4c7cc687976c03f1615b.png

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Posted

Hi.

I had symptoms a bit like this on an old motherboard.

The problems got progressively worse, i.e. needing a few reset to get it going.

Until, finally the MB failed to boot at all.

I am guessing it is a power problem. Maybe faulty Capacitors on the MB.

So, at the initial surge at power on fails, but once it is mostly on, and all one does is a reset, it works.

 

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On 9/11/2021 at 11:43 AM, Syntaxx said:

Really need to bump this. In the process of making my new PC so I'm looking to sell this PC soon so I need this fixed.

Troubleshooting a PC that REFUSES to POST! Here's how I fixed it... - YouTube

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