Dell Latitude 5420 screen replacement

Question

Replaced cracked screen on my Dell Latitude 5420 with same screen (N140HCN-G53 Rev. C1), but screen wont turn on? Getting two orange lights blinking followed with 7 white ones? What Im doing wrong? Replaced several screens , but never had any issue until now?

Thanks

confuseduser43 · Answer

Hello,

There is a manual that helps you looking up what the flashing pattern is trying to tell you for latitude 5420 you can find this manual here troubleshooting => System diagnostic lights

7 white 2 amber => LCD failure (SBIOS message) suggested solution Replace the LCD module.

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Dell Latitude 5420 screen replacement

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