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stsin105
New member
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Message 1 of 3
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Flag Post

Pressing power button and PC not starting. HP AiO 400g2 non-touch

HP Recommended
HP AiO 400g2 non-touch
Microsoft Windows 10 (64-bit)

Hello,

 

I have issue with HP AiO 400g2 non-touch.
When i press power button only led lights anything else not start.

 

IMG_20210626_151948.jpg

 

Mother board receiving power

IMG_20210626_151958(1).jpg

 

 

I try to replace DC Cable, CPU, RAM, I try remove BIOS Battery, unplug and plug all cables.

I also try "press 30 second", Please don't suggest that.

 

Yesterday when problem was occurred, I teardown it and instantly power on when i press button, after teardown.

 

Today morning, when i try to turn it on, it was same as yesterday.

Teardown wont help at this time.

 

 

Can someone tell me what's the real problem here?

 

Maybe motherboard?

 

 

 

2 REPLIES 2
itsmyname
Level 9
5,033 4,948 232 647
Message 2 of 3
Flag Post
HP Recommended

Maybe motherboard. Does it start when "cold" (powered-off all night)?

 

Maybe on/off button, but not likely.

 

Maybe power-supply. If you can do a "tear-down", you have the skills to try a different power-supply, with a "bare" system:

* keyboard

* video-cable

* disconnected data/power cables to disk-drive and CD/DVD

* power-cord

to see if can successfully POST (Power On Self Test).

 

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stsin105
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Message 3 of 3
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HP Recommended

Thank for reply.

 

I try as you said but result is same.

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