Solved! Acer E1-531 is power on but no display.

[Bikash75]

Hello, I have a Acer E1-531 laptop. It's is power on but no display ☹. I checked , RAM is ok , Harddisk is ok I also replaced the BIOS Lithium 3V battery. Still nothing ,
Please anybody help me 😭 please

 

[helpstar]

check with an external monitor/TV

 

[Bikash75]

Still it not worked with external monitor.
Motherboard is also working. When I connect mouse or keyboard they lit up .
please anybody help me, I couldn't diagnose the problem 🥺🥺😭😭😭ಥ╭╮ಥ

 

[helpstar]

while the laptop is on and probably running windows, press and hold the key "windows" then press "p" to select the external monitor blindly

other than that, remove the hard drives and try again

if this won´t work, remove the RAM and try either a new one or if two are installed try using only one (additionally switch ports)

after that I think your laptop is not repairable by you and needs an expert