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Andreasbest replied to Dell Latitude 7410 dead and amber light as long power button is pressed.

in Troubleshooting Laptops, Tablets, and Mobile Devices

04-17-2025, 05:20 AM
My friend listen, i tried before to explain it. 7310 and 7410 have exactly the same motherboard, i have tried all combinations of flashing, no luck. Dell Support confirm 7310 and 7410 have the same BIOS.
Problem is on power supply rails but i still haven't managed to get some free time and research for it.
I'll start with 3v and 5v measurements, probably after Easter and update.
I really hope we manage to solve it, lots of Dell users suffer from this issue....

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Andreasbest replied to HP BIOS unlock tool

in BIOS Requests ONLY!

04-07-2025, 08:21 AM
Hello!
Finally this BIOS worked, thank you very much.

P.S: It would be wise to keep in mind that under certain circumstances both utilities fail to edit the locked BIOS. Unfortunately i don't know the exact circumstances but i'll keep the locked BIOS stored in case someone wants to run some research.

Thank you again!...

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Last edited by Andreasbest; 04-07-2025, 08:34 AM.
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Andreasbest replied to HP BIOS unlock tool

in BIOS Requests ONLY!

04-02-2025, 12:37 AM
Can someone please remove the password from the above bios manually?
Thank you in advance.

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Andreasbest replied to HP BIOS unlock tool

in BIOS Requests ONLY!

04-01-2025, 03:34 PM
Well yes, when i try to enter BIOS it asks for fingerprint OR password, if i press Esc it asks me if i want to enter as Guest.
Also the RCunlocker confirms there's a password and that password is removed.
I upload screenshot and original bios it self.
Thank you in advance

S/N: 5CG43701QQ...

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Andreasbest replied to HP BIOS unlock tool

in BIOS Requests ONLY!

04-01-2025, 11:45 AM
Ok now i'm into a very weird situation.
I backed up the bios from a 650 G1, i drag into this tool and RCUnlocker too, the result is that both the original dump and the patched (from both tools) are identical!
I compare them with HxD
How is this even possible? I feel super dumb right now.

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Last edited by Andreasbest; 04-01-2025, 12:03 PM.
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Andreasbest replied to Dell Latitude 7410 dead and amber light as long power button is pressed.

in Troubleshooting Laptops, Tablets, and Mobile Devices

03-24-2025, 02:47 AM
Hello. I mean i got the BIOS chip from non working and solder it on the working motherboard and works great, meaning there is nothing wrong with BIOS or BIOS chip....

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Andreasbest replied to Lenovo Thinkpad Yoga X1 Gen 6 no charging

in Troubleshooting Laptops, Tablets, and Mobile Devices

03-22-2025, 12:17 AM
Have you tried RTC reset?
Remove all power sources: charger, main battery and rtc battery and hold power button for 30 secs, then connect charger and see if powers on.

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Andreasbest replied to Need Dump for Acer Aspire 3 A315-42

in BIOS Requests ONLY!

03-10-2025, 08:41 AM
Not sure, the link redirects me to first post. What is the post number with the bios you want me to flash?...

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Andreasbest replied to Need Dump for Acer Aspire 3 A315-42

in BIOS Requests ONLY!

03-10-2025, 03:12 AM
Yes you are correct, the sticker is in bad shape and as i see it now i must have mistaked 0 with O
Anyway i found a working dump here [URL]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/bios-requests-only/89507-need-bios-bin-eh5lp-la-h801p-rev-1b?p=3507374#post3507374[/URL] post # 18

but ME needs cleaning (logo has huge delay)

Can you clean it please?

Thank you!https://Yes you are correct, the sti...taked 0 with O...

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Andreasbest replied to Need Dump for Acer Aspire 3 A315-42

in BIOS Requests ONLY!

03-08-2025, 11:45 AM
bump

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Andreasbest replied to Need Dump for Acer Aspire 3 A315-42

in BIOS Requests ONLY!

03-06-2025, 02:26 AM
Are you sure all these info are required to just change the mac address?

Anyway here:
Model_no: N19C1
Model: A315-42-R51
Motherboard: LA-H801P rev. 1B

Thank you....

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Andreasbest replied to Need Dump for Acer Aspire 3 A315-42

in BIOS Requests ONLY!

03-04-2025, 10:40 AM
Hello.
I received a Acer Aspire 3 with a weird demand "please change both mac addresses, wifi and ethernet to anything you desire"
I have no idea how to do it so i need your help.
S/N: NHXF9ETOO8951047458900
Thank you in advance!!...

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Andreasbest replied to Lenovo Legion Y520-15IKBN Display works only through HDMI

in Troubleshooting Laptops, Tablets, and Mobile Devices

02-25-2025, 10:35 AM
Main IC got very hot, so i guess the short is there.
Ordered a new screen. Thank you all!

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Andreasbest replied to ThinkPad T460s NM-A421 BIOS DUMP

in BIOS Requests ONLY!

02-25-2025, 04:22 AM
This on worked on T460s with 2x 5 times beep. Thank you!...

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Last edited by Andreasbest; 02-25-2025, 04:41 AM.
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Andreasbest replied to Lenovo Legion Y520-15IKBN Display works only through HDMI

in Troubleshooting Laptops, Tablets, and Mobile Devices

02-24-2025, 10:29 AM
Desolder the last 2 capacitors that seemed shorted, no problem there either. The short is elsewhere.

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Andreasbest replied to Lenovo Legion Y520-15IKBN Display works only through HDMI

in Troubleshooting Laptops, Tablets, and Mobile Devices

02-24-2025, 09:42 AM
Sure, screen model is LP156WF6 SP K6
The green marked components, mostly capacitors, were desoldered and short remained, the red marked not desoldered yet.
All of them seem shorted to GND, both pins.
The other screen i tried is not exactly the same model so can't use it for measurement comparison....

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Andreasbest replied to Lenovo Legion Y520-15IKBN Display works only through HDMI

in Troubleshooting Laptops, Tablets, and Mobile Devices

02-24-2025, 05:01 AM
Fuse replaced, still no display, fuse not blown after two tries but nearby capacitors seem shorted, desolder them all and short remains on pads, solder them back. Out of ideas (except screen replacement).

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Andreasbest replied to Lenovo Legion Y520-15IKBN Display works only through HDMI

in Troubleshooting Laptops, Tablets, and Mobile Devices

02-24-2025, 04:22 AM
Fuse F1 32v 1.5A is blown.
Gonna replace it and report back.

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Andreasbest replied to Lenovo Legion Y520-15IKBN Display works only through HDMI

in Troubleshooting Laptops, Tablets, and Mobile Devices

02-24-2025, 04:20 AM
With panel replacement works great, indicating something wrong with the screen itself. I'll measure all fuses on LCD board and report back.

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Andreasbest replied to Lenovo Legion Y520-15IKBN Display works only through HDMI

in Troubleshooting Laptops, Tablets, and Mobile Devices

02-24-2025, 03:45 AM
No, i haven't disassemble the lcd bezel yet but i'm about to do it in a few minutes to measure the fuse and the edp cable.

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