Question Computer momentarily turns off before turning on normally

[END7]

I have this problem with my Desktop PC since past 3 years when I replaced my faulty PSU with Corsair VS550 back in 2017. Everything was perfect before that with the previous PSU.

Since then, every time I turn my PC ON, the front LED light turns ON, CPU and PSU fans etc. start rotating AND then all of them turn OFF immediately and stays in that state for a while (for 4-5 seconds) and then finally TURN ON again automatically and normally (with no manual Switch ON), and PC runs with no further issue.

This thing happens in case of fresh start of the computer only. When I just turn OFF the computer keeping the UPS still turned ON and then turn on the computer again anytime later (keeping the UPS still turned ON), there is no such issue. But if I switch OFF the UPS along with the computer and go with a new fresh session, same problem happens.

Considering this to be a fault with the PSU, I have installed a new Cooler Master 450W PSU yesterday, BUT again same issue. So this might not be due to the PSU itself (I think).

► To better understand the issue , please consider in watching this video of my PC uploaded on G Drive: CLICK HERE

Any resolution/suggestion from anybody with knowledge of this issue would be highly appreciated.

Thank you.
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My System Information---
Board: Intel DH67BL (Using since 2011)
CPU: Intel Core i5 2310 @2.90GHz
RAM: 4GB, DDR3
Graphics Card: Nvidia GeForce GT 520, 1 GB
Boots from: Samsung 860 EVO 500GB SSD, Addl. 1 TB HDD installed
Power Supply Unit: Cooler Master MWE 450W (same problem with Corsair VS550W)
Windows 10 Pro, 64-bit
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[VirtualLarry]

Typical double-post of Intel systems of that era. I think that it's normal, and a function of your motherboard, if you kill wall power to the PSU/mobo/standby power.

Might also check if your CMOS battery needs replacing at this point.

Edit: Might also be the AML of the Intel board. (Intel Management Layer, or something like that. Maybe it's called AMT.) You need to shut that off in BIOS.

 

[END7]

Might also check if your CMOS battery needs replacing at this point.

Edit: Might also be the AML of the Intel board. (Intel Management Layer, or something like that. Maybe it's called AMT.) You need to shut that off in BIOS.

Thanks for your reply.

I had replaced the first CMOS battery (that came with the MoBo) in 2018 with a new one (the first one worked for 7 years). But the problem started even before that, in 2017, when I changed the PSU. After installing the new PSU, the first thing I noticed was this "power on-off-and back to on" problem, which was not there with the previous PSU. Otherwise, the PC booted normally on 2nd attempt and working in the same way till now.

Since the BIOS Settings along with system date/time DO NOT RESET, could this problem still be related to the CMOS?

Also, I couldn't found the Intel Active Management Technology (Intel AMT) in the BIOS settings. I tried once by resetting the BIOS Settings back to default, but the result was negative.