08-13-2018 04:56 AM - edited 08-13-2018 04:59 AM
Hi, I have Lenovo Z50-70, everytime i try to power it up the powed led flash once and stop and the laptop starts again by itself and i hear the harddisk power up and stay on this state for 30 seconds and then power off and start again by itself, all this with black screen and no response with keyboard, and during the 30 seconds before it restart the DVD drive can open and close.
the way to stop this is to unplug the AC adaptor and the battary.
is there any solution regarding my issue.
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08-13-2018 08:11 AM
Welcome to the Community Forums.
I would suggest having the laptop checked in a service center specially if you already checked the ac charger working ok. They would be able to isolate on the board level which was causing this assuming that the RAMs are ok including the heat sink and fan assembly are fine.
Here is also the hardware manual if you have the tools and skills to clean and reapply thermal paste if needed.
08-13-2018 11:01 AM
Thanks, but i removed RAMs and HDD and still the same status, and when i removed the AC while the laptop in the 30 seconds i hear a long beep
does it mean anything ?
08-13-2018 11:06 AM
The beep may be because there are no ram. Try to re apply the thermal paste and clean the fan. If you are still having the same issue , best to have it checked with a board technician to isolate which part of the board is causing it.