Windows 10: No signal since startup

Hello,

I read many threads about Windows 10 and AMD catalyst leading to a black screen on startup.

Well, I'm not so sure that my problem is actually the same.
Windows 10 does start (I can get access to the files from an other computer trough the local network), but the displayPort screen gets no signal since the computer power on (no Bios screen, no loading, no login screen...)

I tried to press Ctrl and then my PIN number, but nothing happens...

I restarted a dozen of times this morning, but nothing seems to work...

Thanks for your help !

:)

 

no signal since completing mango update

I have a Wins phone on Orange and since updating the Mango software I have no signal and cannot rectify this via settings. Help?

 

no signal since completing mango update

Thanks but I have tried that and nothing. I dont understand why this issue would occur after upgrading Mango

 

In fact it seems to be related to the AMD graphic card support.
Sometimes, screen is ok, and I installed Teamviewer to actually see what happens when the card crashes.
The card is "lost" after a few minutes, or even after several hours.
It is then replaced by a "generic graphic adapter" and it says that there are not enough resources to handle the device. The resolution is then set to 640x480, which is not supported by my screens I guess.
Updating the drivers did not do much about it, I still got card crashes after...

Would you have any insights for this?
Thanks!