MacBook Pro late 2011, suddenly doesn’t boot.

Ticla wrote:

MacBook Pro late 2011, suddenly doesn’t boot.

Problem is:

When I press power button  I hear usual starting clicking noise and the sleep light lit for 1 second• , and the screen stay blank.

What I did…

Remove second bank of RAM, Exchange Ram Stick, and Replace RAM.

•  Remove Hard Disk (SSD)

• Remove all external wire connection to computer (USB, LAN, Charger …)

•  Clean with compress air CPU Fans (Was clean)

   (Battery is fully charged, 8 green light )

There is one time the screen Password Reset Screen appears, in upper left menu, I choose to reboot.

 Thanks for your help and advise.

reference—

If your Mac doesn't turn on or start up

Even out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a hardware issue—

https://www.apple.com/retail/geniusbar/

GPU failures are common to the 15" MBPro 2011's and requires a replacement Logic Board which I don't recommend. There are other posts on these forums which provide instructions on how to force the laptop to use the Intel GPU which may prove difficult to implement in your present situation.