Re: very challenging issue! lenovo G50-80?



Ooops... such a big fail

My first search for the programmer showed +30€, and the programmed chip was just 16€, that's why I've purchased that way.

Anyway, as it's so cheap, I'll purchase the flasher for future research/repairs.
Thanks for the info....

Re: very challenging issue! lenovo G50-80?



After changing the 4407 mosfet, now I see I've the correct voltages on the 2nd mosfet, but the laptop is still not booting.

As I don't have the needed hardware to reflash the bios, I've purchased one programmed replacement for the 25b64bsig chip in the ACLU3/ACLU4 NM-A361 motherboard, inside my Lenovo G50-80 (model name: 80E5).

I'll come back here to report when replaced.
Thanks for the suggestion....

Re: very challenging issue! lenovo G50-80?

Hello.

I own a Lenovo G50-80 with NM-A361 motherboard and have the same issue:
- When I try to turn on the laptop, the LED turns on for 1-5 seconds
- Then it turns off

No beeps, nothing appears on the screen, no nothing.

For two weeks, after several tries the laptop was finally booting up, but this past weekend it finally died.

After some research, I found this forum and some videos on YouTube.
I finally came across this one: [url]https://www.youtube.com/watch?v=uIfBMkFB10E[/url]...

Re: New Members - please post your introductions here

Hi!

I'm Alex, a computer technician from Spain. Along the years I've repaired some power supplies in workstations, LCDs, and some other devices. Now I'm facing some harder challenges, so I'm here to learn.

Thanks for creating this useful forum.
Regards from Spain.