hello, this lenovo turns on the first time but then stays off, if I remove the 3v bios battery it turns on and works, but if I try again after turning it off it does not turn on again, I must first remove the bios battery, here too the bios from the lenovo site, but I have not solved
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Re: lenovo B590it turns on only the first time but remains off afterwards
What is the mb code?? Schematic available?? Seems like RTC Section fault. -
Re: lenovo B590it turns on only the first time but remains off afterwards
i also have doubts about rtcComment
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Re: lenovo B590it turns on only the first time but remains off afterwards
problem solved, it was the corrupted bios, thanks
https://www.badcaps.net/forum/showth...t=63193&page=2Comment
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I've had this laptop for 8-9 years, and about a week back, it started malfunctioning. When I press the power button, the power LED comes on for about 5secs and turns off. The fan also doesn't spin at all during this time. But, if I press the power button, and then manually spin the fan, the laptop boots up and the fan starts spinning on its own. Even if I do this, and the laptop boots up, it turns off (hard shutdown) after some time between 10secs and 1hour randomly. I've tried checking the fan voltage and it's at zero volts when I press the power button without spinning it, but when I spin the...
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Hi all,
I have a Lenovo Legion 5 with a Ryzen 7 series CPU and RTX 3070 GPU. My issue is that it turns on and all seems fine except after a few seconds the fans spin up high and the laptop turns off after 34 seconds.
I can get into bios and can even boot and login to Windows however after 34 seconds no matter if Im at the bios screen or booted into Windows it will just turn off.
I have managed to run HWmonitor and the temperatures of the CPU and GPU are fine, I can also touch the heatsync which is warm but not hot.
I have tried a few new bios but exactly... -
Hello everyone,
I'm having a hard time dumping the BIOS of a Lenovo Ideapad Duet 3 (11IAN8). The chip is a Winbond W25R256JVEN, directly soldered to the board in a WSON8 package.
Since there are lots of tiny components near the chip, I was hesitant to desolder it using hot air. Instead, I soldered thin wires directly to the chip's pads and connected them to a CH341A programmer (photos attached).
The chip is detected correctly in both NeoProgrammer and ASProgrammer, but I'm unable to get a consistent dump. I've tried over 15 times — shortened the wires to... -
Hello guys, i need help with this problem, I have a NM-D041 mobo, it came with low impedance in 3v linear regulator rail, the cause was a damaged EC controller ITE8227e-192. I ordered a new one and replaced it. This laptop have a different chip for keyboard management and it8227e pins for programming ITE chips are not accesible through keyboard interface, I flashed it using i2c interface pins with vertyanov programmer because laptop was dead and SPI flash didn't have power (only 3v EC) so it couldn't access firmware stored in SPI memory. I read SPI and extracted it8227 firmware from original BIOS... -
Here is a pretty crazy one.
Step 1.
Laptop was brought to me as dead not working. Removed everything , cleared everything.
Step 2.
Some liquid damage close to the Type - C connector, and the connector even though it was cleaned wasn't charging the battery . Removed the Type-C port, and replaced it. Now the laptop turns on and charges battery. Shows external screen , not internal.
Step 3.
Took out the screen and checked it to a secondary Gen 2 i have, screen works like a charm.
Step 4.
Lets ,dive into the board. I see the edp cable on the...
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