HELP! No POST problem + weird solution?

[Garette]

I've been a having a no POST problem for days now. All fans would turn on but my monitor wont get any signal. The case LED wont blink too.

Here's what I've tried:
-Reset CMOS
-Holding the power button while PC is plugged off
-Changing PSU
-Changing/Re-seating RAM
-Adding/Re-seating GPU (a working gtx 1050 from my other rig)
-Bought a new AVR and power cables
-Used my TV as monitor (In case my monitor was the problem)

I sent it to a technician, and it instantly worked in his shop without doing anything. The LED on the case blinked and it POSTED and booted. He turned it on and off multiple times and it still worked fine.

The problem might be in my power outlets here in my house I thought. So I changed outlets and it works sometimes, sometimes it doesn't. So every time it fails to POST, I must change where my AVR is plugged in to the wall until it works.

This is really weird and frustrating. What in the world is happening here?
Any help would be appreciated.

 

[faalin]

Have you tried just plugging the computer into the wall. There may be an issue between the PSU and AVR, what PSU do you have and what AVR are you using.

 

[Garette]

Have you tried just plugging the computer into the wall. There may be an issue between the PSU and AVR, what PSU do you have and what AVR are you using.

I have a Deepcool DE500 PSU 500w, which was working just fine on my other rig last week.
The AVR I just bought is a cheap SECURE 500w AVR.

I haven't tried directly plugging it to the wall because it the sockets don't match and I have no adapters.

 

[Garette]

I started a new thread because I came about a new WEIRD "solution" than this one.
It's here:

http://www.tomshardware.com/answers/id-3760957/post-problem-weird-solution-explanation.html

 

[Rogue Leader]

MERGED QUESTION
Question from Garette : "No POST problem and a WEIRD solution, I need an explanation."

This is like more like an update from a thread I started yesterday:

I've been a having a no-POST problem for days now. All fans would turn on but my monitor wont get any signal. The case LED wont blink too.

Here's what I've tried:
-Reset CMOS
-Holding the power button while PC is plugged off
-Changing PSU
-Changing/Re-seating RAM
-Adding/Re-seating GPU (a working gtx 1050 from my other rig)
-Bought a new AVR and power cables
-Used my TV as monitor (In case my monitor was the problem)
-Plugging the PC directly to an extension chord to the wall.

I sent it to a technician, and it instantly worked in his shop without doing anything. The LED on the case blinked and it POSTED and booted. He turned it on and off multiple times and it still worked fine.

The WEIRD SOLUTION:
After many frustrating trial and errors, I observed that leaving it at a "NO-POST state" for about five minutes then immediately plugging it off then on again, allows it to POST and boot and function as any normal PC would. Yeah, it's one of the weirdest things I've seen in my years tinkering with PCs.

This is really weird and frustrating. What in the world is happening here?
Any help would be appreciated.