GTX660 in Acer Predator AG3620-UR308 'no signal '?

Hello

I bought an Acer Predator AG3620 UR308...

I removed the gt 630 and replaced with an ASUS GTX600-DC2-2GD5

the computer turns on but there is no signal hdmi to TV

I reinserted the gt 630 and everything worked fine...

I disabled startup secure... uninstalled UEFI gt 630 drivers

disc 660 GTX would not go without the card inserted

I have inserted the 660 GTX, it is directed light works... the fans are running

always 'no signal' the HDMI to the tv sharp... help?

what I am doing wrong?

Hello, the solution is

http://Acer--UK.custhelp.com/app/answers/detail/A_ID/27071/~/how-to-enable-or-disable-secure-boot

disable secure boot and allow launch MSC

Tags: Acer Predator

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