E6220 Black Screen, tests fine, external monitor works

Hi ATLdrew,

I appreciate you have tried few steps to resolve the issue; since the external display works fine I suspect an issue with video card.

Depending on the warranty status we can help you further, please use the link below to check the warranty status.

http://dell.to/YeuzUO

Please punch in the system service tag or express service code. In case your system warranty has expired please contact the Out of Warranty department 1-800-288-4410 (U.S.Customer only). In case your system is under warranty please send me the system service tag or express service code through a private chat, so that I can help you further. 

Click on my username select start conversation and send me the details. 

I updated the BIOS to vA13 and it works now.

Thanks for assistance.

I ran the BIST and the screen displayed properly; system diagnostics also were negative for any problems.

Hi ATLdrew,

I am glad to hear that the issue is resolved, in case you have any issues in future please post it in this link or start a new thread.