Re: z77a-g45 shut-down loop issue

1) Disconnect your 60G HDD and XFX Radeon HD 6450, try use on-board graphic and only one RAM stick.
2) clear CMOS
3) plug your 500GB Samsung 850 EVO SSD
4) press F11 to enter boot menu, and boot to your USB drive
5) Install OS

by the way, your BIOS ver...