Try a power refresh and check if this resolves the problem.
Here’s how to do this:
Remove the battery from the laptop
Press and hold the laptop’s Power button for 30 seconds to drain any residual power from the laptop.
Connect and switch on the charger to the laptop and try to start the laptop. (leave the battery out at this stage)
If the laptop doesn’t start, switch off the charger and remove the SSD and try again. At least to see if it starts.
If it still doesn’t start, switch off and disconnect the charger, and then remove the RTC battery (CMOS battery) from the laptop and press and hold the laptop’s power button for 30 seconds. Here’s a link to the service manual taken from this webpage. Scroll to p.45 to view the necessary pre-requisite steps and then the procedure to remove/replace the RTC battery. Take note of the orientation of the battery before you remove it, so that you re-insert it the correct way.
Then re-insert the RTC battery, reconnect and switch on the charger and try to start the laptop.
If the laptop starts, assuming that you haven’t got an OS loaded into the SSD, once it gets to the BIOS screen about no boot device found (or similar message) shutdown the laptop in the normal manner.
Switch off the charger and reinsert the battery into the laptop.
Switch on the charger and then try to turn on the laptop and check what happens.
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