Precision Tower 5810 T5810 - BIOS upgrade without video.

Hi guys, thank you in advance for the attention. It’s about an upgrade on a Precision Tower 5810 T5810. I’ve got a new processor E5-2685V3 and the board version I have is the 0K240Y-A01 which I believe the A01 means the BIOS software version. I checked all the BIOS upgrades until A29 and just the A13 version tells something about new Intel V4 processors, but nothing related to newer V3 processor. Everything is working perfectly, no led error message, I tested the memory in another machine, looks like the power supply is ok, all the fans starts, the video card is working but..... the POST and the Video doesn’t show up. Tried to clean the contacts, reset the COSMOS, replace the coin cell and nothing happens. Is there a way to upgrade the BIOS without the video? Is there another thing I can do since the warranty is over? Thank you!