820-3926, startup chime, no boot.

[vaswaniraj]

Hey guys, I have a 820-3926 here that has startup chime but, doesn't boot. I even tried booting with an external hard drive and also resetting the NVRAM, neither solved the issue, all it gives me is a plain white screen. Any further troubleshooting advice?

 

[Gurmon]

Have you tried an external display ?

 

[dukefawks]

WTF is a 820-3926?

 

[vaswaniraj]

820-3926 is a board number.

 

[vaswaniraj]

Tried an external display however it makes no difference as the white screen is still present

 

[dukefawks]

Let me ask again....what the fuck is an 820-3926?

 

[vaswaniraj]

Hi Duke, Sorry for the mistake. My tech guy who works for me had a type error. The actual board number is 820-2936-B. We even tried connecting the Macbook Pro to an external screen and still we are getting a white screen. Tried booting with an external hard drive. No Results. Pressed CMD + R to see if it takes us to the recovery mode, but nothing. All it gives is a White Screen. Could you please advice any troubleshooting steps. Raj.

 

[dukefawks]

Disconnected everything but the LCD? PRAM reset works?