Last year I "inherited" a colleague's laptop (see model in title) that initially worked fine. (I put in a 500GB NVME SSD and had to set the BIOS in Legacy mode to make it work.. I think I had also updated the BIOS at the time.)
Unfortunately the laptop developed an issue that got worse over time: When powering up, the laptop would sometimes just stay dark (no backlight and/or BIOS splash logos - though the fans where turning on and off). It would take repeated power off/on to eventually make the laptop boot into Windows. Once the boot reached Windows, the laptop seemed to run perfectly fine (perfect image, sound and Wifi worked fine, RAM test showed no issues, 3D gfx benchmark test ran fine..) Yet a Windows reboot might immediately result in the "stuck blackscreen" scenario - eventhough the machine had worked fine just seconds before. Sometimes the machine would "recover" from the blackscreen after a long time (e.g. >30minutes) and then actually continue to boot into Windows. (It seemed as if the machine was "waiting" for some kind of "state" to be reached before continuing the boot sequence..).
Over time the ratio of successful boot sequences progressively shifted towards the failed/stuck boot sequences. (As if the component responsible for the issue progressively degraded.) By now the machine no longer seems to reach the successful "state" anymore at all: After power-on the screen stays dark (without backlight) and the fans spin up. After about 10 secs the fans furn off and stay off for about 20 secs, then both fans go into some kind of "burst mode" spinning up and immedately turning off again with a ~1sec frequency.. (I guess that at that point both CPU and GPU have heated up to the point where the board feels that some cooling is needed..)
The battery charging still seems to work (judging by the respective orange LED that turns on when charging is deemed necessary).
The power supply delivers a stable 19.4V. And the boot issue stays the same regardless of using only the battery (power supply disconneced) or using only the power supply (battery unplugged). I had also replaced the CR2032 battery for the BIOS and that made no difference either.
Pressing the power button for 30 secs (to discharge static buildup) does not seem to make any difference.
The power rails that I measured on the board seems to supply the expected 3.3 or 5V. The 1V_CPU_CORE seems to supply 1.78V (I have no idea if that is actually the correct voltage for the CPU - judging by the "1V" label used in the schematics?)
Does the described problem behavior look familiar to anyone?
Unfortunately the laptop developed an issue that got worse over time: When powering up, the laptop would sometimes just stay dark (no backlight and/or BIOS splash logos - though the fans where turning on and off). It would take repeated power off/on to eventually make the laptop boot into Windows. Once the boot reached Windows, the laptop seemed to run perfectly fine (perfect image, sound and Wifi worked fine, RAM test showed no issues, 3D gfx benchmark test ran fine..) Yet a Windows reboot might immediately result in the "stuck blackscreen" scenario - eventhough the machine had worked fine just seconds before. Sometimes the machine would "recover" from the blackscreen after a long time (e.g. >30minutes) and then actually continue to boot into Windows. (It seemed as if the machine was "waiting" for some kind of "state" to be reached before continuing the boot sequence..).
Over time the ratio of successful boot sequences progressively shifted towards the failed/stuck boot sequences. (As if the component responsible for the issue progressively degraded.) By now the machine no longer seems to reach the successful "state" anymore at all: After power-on the screen stays dark (without backlight) and the fans spin up. After about 10 secs the fans furn off and stay off for about 20 secs, then both fans go into some kind of "burst mode" spinning up and immedately turning off again with a ~1sec frequency.. (I guess that at that point both CPU and GPU have heated up to the point where the board feels that some cooling is needed..)
The battery charging still seems to work (judging by the respective orange LED that turns on when charging is deemed necessary).
The power supply delivers a stable 19.4V. And the boot issue stays the same regardless of using only the battery (power supply disconneced) or using only the power supply (battery unplugged). I had also replaced the CR2032 battery for the BIOS and that made no difference either.
Pressing the power button for 30 secs (to discharge static buildup) does not seem to make any difference.
The power rails that I measured on the board seems to supply the expected 3.3 or 5V. The 1V_CPU_CORE seems to supply 1.78V (I have no idea if that is actually the correct voltage for the CPU - judging by the "1V" label used in the schematics?)
Does the described problem behavior look familiar to anyone?
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