I’ve been trying to fix my Lenovo Z70-80 laptop for about two weeks now. I’ve already tried a lot of things, but after looking online, I started suspecting the BIOS.

I ordered a CH341 programmer and connected the desoldered BIOS chip to it. What should I do next? I’ve heard that it is not as simple as just flashing a .bin file, and that some BIOS sections should be reprogrammed while others should not.

Where can I find the correct .bin file for this laptop, and is there anything special I need to do before flashing it?

Thanks in advance for any help.

⟐ Commented May 07, 2026 at 5:31 MST

⟐ Commented May 09, 2019 at 14:27 MST

CPU: i5-5200U

GPU1: AMD R9 M375

GPU2: Intel Graphics 5500

my laptop was working good till yesterday and suddenly a blue screen had appeared with the error code: thread_stuck _in_device_driver

then the windows did not boot again

then i setup a new windows after that when i try to start any game with the AMD GPU

it does not start or crash at start or give me a full screen of glitches.

I tried every thing

-clean AMD drivers (with DDU in SafeMode)and install latest one.

-clean AMD drivers again and install old drivers from Lenovo website

-reinstall the windows .

the games works fin with Intel GPU but when I change to AMD it is going crazy

how can i fix it ?

⟐ Answered September 13, 2018 at 21:42 MST

My laptop runs great as long as it is plugged in, and left on or in sleep mode. If it gets turned off or unplugged it will not turn back on normally. It used to take 15 minutes up to few hours before the Lenovo logo came on, now it’s stuck on black screen for two days. There is a single BIOS beep when plugged/unplugged while the battery is in. From what I googled, it seems to signal normal booting. The light indicating that it is turned on lights up and is solid (not blinking). The screen is black and the Caps/NumLock light will not turn on. I can hear the fan running, CD-ROM ejects etc. I tried all the usual tricks and nothing. Before, if left plugged in and “on”, it eventually would boot up on it’s own, hours later. But now it’s been too long. What does this mean? Possible to resurrect?

Besides the myriad battery/motherboard/RAM/hardware solutions on the Internet, one suspicion I have is the computer being unable to find/load Windows. The reason I think so is because before the issue emerged months ago, I remember playing with tweakings and cleaning software that also targeted system files, especially the bloated Windows updates junk, among others. Could this be a factor? If so, is there a fix under the circumstance of laptop not booting? Thanks.

⟐ Commented May 08, 2019 at 19:00 MST

⟐ Answer accepted July 22, 2018 at 8:26 MST