After install 8 more gig system wont boot

[Jan Machdal]

Hello IT wizards.
I have just one question. In my system I have 2x4GB G.Skill F3-12800CL9D-8GBXL. Today I bought 8 more gig of exactly same memory. I mean EXACTLY same. After installing that sticks to my MoBo (which is Gigabyte GA-Z77-D3H (rev. 1.0) my PC wont boot. It starts but after 10? seconds restart. And over and over again. Any ideas why?

 

[atomicWAR]

try seating the ram again....also try one new stick at a time "(without the old) to see if you have a bad stick. let me know what you come up with.

 

[Jan Machdal]

Solved.
I'm sooo stupid. U know Im IT guy in one small company and I feel really stupid. It wasn't about reseating sticks. Everything what I done was : I changed XMP from disabled to profile1 on my motherboard and voila... Fine. Thank you anyway.

 

[atomicWAR]

i am a tech as well (retired by disability) but i have done some of the same things...forgot to plug something in...used wrong cable. we all have brain farts. no worries.

solution love would be appreciated though!