Hello guys.

I'm trying to fly the 757-200 and after a few minutes in flight, all electric power goes dead. Engines keep running but my MFD and PFD are dark. EICAS stays on but thats it...

It all starts with a Fuel xFeed message on EICAS, All lights in the IRUs are yellow. If I click the crossfeed button, all screens go dark.  

Looks like I can continue my flight if I resist the temptation to click the Croosfeed button, but why am I getting this behaviour?

I tried to locate the Uninstall KB for the 757 to try a complete reinstall, but I could not find it...

Help, please   :'(


****  Update...

I continued the flight wothout hitting the button, after leaving my cruise altitude, all warning lights have stinguished and the plane seems to behave normal. So I guess theres something with my plane reaching cruise altitude?