Hackintosh shut down while Mavericks loading bar progressing

Hello,
My Hackintosh wasn't able to post anymore with an Ab error.

This is my configuration :
Product Name: GA-Z87X-UD7 TH (2.0)
BIOS Ver: XXX;
Model: Intel core i7 4770K;
Size: 2 x 4G;
Power Supply: 650;
Memory Part No.: Crucial - BLT2CP4G3D1869DT2TXRGCEU

My motherboard just came back from Gigabyte aftersale service.
The hackintosh is now booting, but shut down when mavericks loading bar is showing.

What should i do?

Thank you,

JM