ACER Nitro VN7-591G Hades_HSB 14206-1 no boot, black screen

[suiramix]

Hi there,
Got this (clean) laptop without any previous repair attempts or any history about it …
When I press power button, the blue led is on, but no fans no boot splash or display. The battery is charging too.
No visible faulty components are on the board.
After awhile, the CPU_Core coils (from CSD97374) PL4701, 4702 and 4703 are extremely hot.
The 1V_CPU_CORE = 1.725V [ is not this too high?] and of course the CPU itself is getting hot
Also based on other posts from here, I measured resistance between:
DCBATOUT and 1V_CPU_CORE= 620 ohm and 1V_CPU_CORE and ground= 6.5 ohm
I used some IPA around the coils to see for shorted caps but no luck.
Any ideas...? Could be a bad BIOS ?

[mcplslg123]

Nothing wrong in info provided so far. The vcore is correct and not high.

Check whether DRAMRST# is present or not.

[suiramix]

Hi mcplslg...yes, DRAMRST# is present, 1.35V with one stick of RAM attached...what should I do next?
Thank you!

[mcplslg123]

Do a visual inspection of motherboard under microscope/magnifier. Flash clean me bios(remember to make backup of your original bios). Flash only the main bios for now.

Do check Power good signals. I beleive even PLTRST# is present.

[suiramix]

Using the dump from post #13 [see attached link] worked for me also Acer Hades_HBS 14206-1 448.02W05.0011 !!! Thank you again mcplslg for your support !
https://www.badcaps.net/forum/troubl...hades-hbs-bios
For now it seems to work but running hot even with fresh applied Arctic Silver 5 thermal compound ...

[mcplslg123]

This a gaming laptop-so will generate a lot of heat. not unusual.