It feels like the right hinge may break apart, can this be fixed with ease. I use a iFixit Pro Tech Toolkit but overall never seen one taken apart.

Any help would be welcome!

Product Name - Lenovo Z50-75

Model Name - 80EC

Machine Type Model 80EC00HFUK

⟐ Edited November 26, 2025 at 16:16 MST

⟐ Commented August 21, 2025 at 6:40 MST

I’ve had this problem for a couple of years now, either I’ll try to fix it or sell it but I just can’t seem to find the reason for this happening.

Problem: I tried turning on my Lenovo Z50-75 one day and all I would get is a black screen and the fans running really fast, blowing out a lot of air. I’ve tried multiple things but had no result.

I know that there nothing wrong with the screen because when I would turn it on previously the webcam light (the LED which would turn on when the webcam was active) would blink at startup but now with it doing this it doesn’t turn on at all, I just get a non-working black screen with a two second pause before the fans go turbo mode.

I’ve tried;

- Switched out each RAM sticks before completely changing the RAM sticks

- Taking out the battery and just using the charger to turn it on

- Plugging in HDMI into an external TV and then monitor

- Letting it charge for at least 10 hours with it running, then leaving it to charge without it running

- Changed the HDD multiple times with different Windows/Linux operating systems

- Format HDD to try reinstall Windows on the original HDD

- Hard restart the laptop - take battery/charger out and keep the power button pushed for 30 seconds

- Taken out the fan and given it a good clean

If I don’t hard restart it then when I turn it on, it would straight away turn on the fans but if I did a hard restart it then it would wait 2-3 seconds before the fans came on and maybe give it a chance to come on.

Sometimes in the past, if I hard restarted it, it would turn on occasionally but it would be very slow and crash after an hour or so of usage then it would repeat with the fans and black screen problem. If I sometimes mess with it by changing around the RAM sticks it would sometimes work but now it doesn’t do that anymore

I’ve had a problem trying to the back frame off after unscrewing all the screws. I’m afraid if I try anymore it’ll most likely break so I can’t get to anything inside, I wanted to try change the thermal paste but I can’t get into it. I just have access to the battery/wifi card/RAM/HDD/fan

⟐ Edited November 26, 2025 at 17:02 MST

I plugged a jack into my laptop while it was powered by phantom power. The machine just “snapped” and went black. There is no signs of power, the leds don’t light up. Is there any chance to save this laptop easily, or do i need a new logic board?

Thanks

⟐ Edited November 26, 2025 at 16:16 MST