What is broken? No display and Power / Fn buttons flickering
Texte:
I'm asking because I've never encountered these symptoms with any computer ever before.
Symptoms:
* flickering power and Fn buttons
* laptop screen blank
I replaced the mainboard of my X270 with one bought from a Chinese store. I've done that before on other laptops of the same model and with different models. although no professional hardware technician, I'm familiar with that kind of work.
I installed the replacement and booted up. The symptoms are as described above; the laptop screen is staying blank and the power and Fn buttons are flickering. Not blinking, flickering. This does not at all look like a post error blinking, it's way too fast.
The flickering might have a pattern that repeats after a pause, but that's just a feeling and I first need to actually record the timings.
With an external screen attached, the system can be used fine, but the flickering of the power button persists.
It's a very weird error. Do you have any clue about what could be broken and how does it cause the symptoms. Or are they unrelated?
I'm baffled.
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I rechecked the flickering of the Power and Fn buttons; there ''is'' a pattern and it's five flashes in about 0.5s, every 1s.
What is broken? No display and Power / Fn buttons flickering
Texte:
I'm asking because I've never encountered these symptoms with any computer ever before.
Symptoms:
* flickering power and Fn buttons
* laptop screen blank
-
I replaced the mainboard of my X270 with a replacement bought from a Chinese store. I've done that before on other laptops of the same model and with different models. although no professional hardware technician, I'm familiar with that kind of work.
+
I replaced the mainboard of my X270 with one bought from a Chinese store. I've done that before on other laptops of the same model and with different models. although no professional hardware technician, I'm familiar with that kind of work.
I installed the replacement and booted up. The symptoms are as described above; the laptop screen is staying blank and the power and Fn buttons are flickering. Not blinking, flickering. This does not at all look like a post error blinking, it's way too fast.
The flickering might have a pattern that repeats after a pause, but that's just a feeling and I first need to actually record the timings.
With an external screen attached, the system can be used fine, but the flickering of the power button persists.
It's a very weird error. Do you have any clue about what could be broken and how does it cause the symptoms. Or are they unrelated?
What is broken? No display and Power / Fn buttons flickering
Texte:
I'm asking because I've never encountered these symptoms with any computer ever before.
Symptoms:
* flickering power and Fn buttons
* laptop screen blank
+
I replaced the mainboard of my X270 with a replacement bought from a Chinese store. I've done that before on other laptops of the same model and with different models. although no professional hardware technician, I'm familiar with that kind of work.
-
I replaced the mainboard of my X270 with a replacement bought from a Chinese store. I've done that before on other laptops of the same model and with other models before and although no professional hardware technician, I'm familiar with that kind of work.
-
-
I installed the replacement and booted up. The symptoms are as described above; the display is getting no signal and the power and Fn buttons are flickering. Not blinking, flickering. This does not at all look like a post error blinking, it's way too fast.
+
I installed the replacement and booted up. The symptoms are as described above; the laptop screen is staying blank and the power and Fn buttons are flickering. Not blinking, flickering. This does not at all look like a post error blinking, it's way too fast.
The flickering might have a pattern that repeats after a pause, but that's just a feeling and I first need to actually record the timings.
With an external screen attached, the system can be used fine, but the flickering of the power button persists.
It's a very weird error. Do you have any clue about what could be broken and how does it cause the symptoms. Or are they unrelated?
What is broken? No display and Power / Fn buttons flickering
Texte:
I'm asking because I've never encountered these symptoms with any computer ever before.
Symptoms:
* flickering power and Fn buttons
* laptop screen blank
I replaced the mainboard of my X270 with a replacement bought from a Chinese store. I've done that before on other laptops of the same model and with other models before and although no professional hardware technician, I'm familiar with that kind of work.
I installed the replacement and booted up. The symptoms are as described above; the display is getting no signal and the power and Fn buttons are flickering. Not blinking, flickering. This does not at all look like a post error blinking, it's way too fast.
The flickering might have a pattern that repeats after a pause, but that's just a feeling and I first need to actually record the timings.
With an external screen attached, the system can be used fine, but the flickering of the power button persists.
It's a very weird error. Do you have any clue about what could be broken and how does it cause the symptoms. Or are they unrelated?
I'm baffled.