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hello there,, anyone who can help us to have bios for LENOVO
HS461 HS561 HS761 NM-D251 REV 2.0
I have downloaded bios from lenovo website,,, but it is .CAP FILE after my bios creator extract it...
i attached the .CAP may you can help us also to trim it..... -
Hs461 hs561 hs761 nm-d521 rev 2.0 2020-12-11 bios plz -
Hello friends,
I have this laptop AMD Platform starting & not posting, fan spinning.
When i press power button, the board get almost immediatly 0.5A ~ and board get stuck at 0.5A with power button led blinking indefinitly.
If i stop the computer (pressing 5s power button), board stop and when i restart i get approx 0.37A ~ and
I try to reflash the bios with no luck, same result, and i try disabling onboard ram (i remove resistors accordling schematic), no more progress.
CPU and his area heat, maybe the cpu is dead?
...10-21-2024, 10:23 AM -
Hello folks,
I have a Lenovo Ideapad V15 G2 with a Ryzen processor.
The owner damaged the motherboard with a knife while cleaning the ventilation slots on the bottom.
Pretty strange, but that's how it is.
I patched the 5 traces he cut.
The notebook now starts again, but does not produce any images. Neither via HDMI nor on the display.
But the display turns on, so it has its operating voltage and also 3.3V.
What signals does the display use to get the image? Unfortunately I have no experience with this.
Schematics:... -
Machine won't power on, no power led, no fan spin, completely dead.
Checked PQ5400 - AONS32314 and pins 5,6,7,8 are 20v (AC adaptor voltage) but pins 1, 2, 3, 4 are 0v.
Following Gate Pin 4 to PU5400 - BQ24780SRUYR.
VCC 20v
ACDET 2.8v
ACDRV 0v (goes to pin 4 gate of AONS32314).
ACOK 0v
REGN 6v
According to datasheet, conditions are correct for ACOK to be high but it is not.
Tracing ACOK it's connected to ACIN which is connected to a pin GPB0 of IT8227 but also shown as connected to +3VL via a 100k resistor...
Working...
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