GA-Z77N-Wifi - change of RAM PC wont boot up.

[wongshue]

Hi All,

I wanted tp upgrade my RAM from 2x 4GB (8GB total) to 2x 8GB (16GB total)


My old RAM is 2x 4GB RAM is Corsair Vengeance LP 8GB DDR3 1600 MHz (PC3 12800) CL9

The new once 2x 8GB is Corsair Vengeance LP 16GB (2x8GB) DDR3 1600 MHz (PC3 12800) CL10 - these ram should be compatible with the motherboard according to homepage.

Im running win 8.1 with latest BIOS (F3) - my motherboard is GA-Z77N-Wifi 

When I change the RAM and want to boot up the PC, it wont start??? Well it turns on, fans is running, there is ligt.. BUT screen remais black, no light in keyboard etc. I cant even reach BIOS.. Its like something is blocking it for starting up BIOS, Screen etc.

I have tried to all the comboes, 1 stick, change the sticks etc. but nothing seems to help...

When I put back in the old RAM its running like normal..

Is there anyone who can help me with a solution??

Looking forward hopefully hearing from some of you. 



 

[ex58]

It's not same RAM's.......2x4GB is cl.9,and 2x8GB is cl.10.

So,went to BIOS and change cl. value to 10 (or what stated on memory sticks) or try set XMP for new memory.
Also increase CPU VTT to 1.10.-1.12V