Months of no issue then boom... cannot boot OS HD or Recovery HD

Hi guys,

Last night I left my computer on overnight and today found the computer shut down. I tried to start it up as usual, clover manager loads at start up, and I launch the MacOS boot drive but it just freezes instantly on the loading screen. I tried the same - switching it off and starting at clover boot manager again - with recovery HD and it does the same but leaves lots of kernel panic text in the background (the kernel panic text only showed twice, and now just does the same as loading OS drive).

Build/// ● ASrock fatal1ty z270 gaming ITX / ac intel z270 So 1151 Dual Channel DDR Mini ITX ● Intel Core i7 7700 4z 3.60GHz So.1151 ● Sierra OS (10.12)

Here is the text that showed up on screen, can anyone help???

panic(cpu 0 caller 0xffffff8018bfeef5): "machine check at 0xffffff8018c1210b, registers:\n" "CR0: 0x000000008001003b, CR2: 0xffffff801947a000, CR3: 0x000000002fb1f000, CR4: 0x00000000003627e0\n" "RAX: 0x0000000000000020 RBX: 0xffffff8019292cc0, RCX: 0x0000000000000001, RDX: 0x0000000000000000\n" "RSP: 0xffffff8209703ee0, RBP: 0xffffff8209703f20, RSI: 0x000000001e000000, RDI: 0xffffff8019208e20\n" "R8: 0x0000000000000008, R9: 0x0000000000000000, R10: 0x0000000000000000, R11: 0xffffff80192e4a90\n" R12: 0x0000000000000020, R13: 0x0000000000000000, RA14: 0x000000004ca3f757, R15: 0x0000000000000005\n" "RFL: 0X0000000000000046, RIP: 0xffffff8018c1210b, CS: 0x0000000000000008, SS: 0x0000000000000000\n" "error code: 0x0000000000000000\n"@/Library/Caches/com.apple.xbs/Sources/xnu/xnu-3789.70.16/osfmk/i386/trap_native.c:168 Debugger called <panic> Backtrack (CPU 0), Frame : Return Address 0xffffff81e8eb3cf0 : 0xffffff8018ae953c 0xffffff81e8eb3d70 : 0xffffff8018bfeef5 0xffffff81e8eb3ed0 : 0xffffff8018a9ae2f 0xffffff8209703f20 : 0xffffff8018c00200 0xffffff8209703f40 : 0xffffff8018b0658d 0xffffff8209703f90 : 0xffffff8018b06b70 0xffffff8209703fb0 : 0xffffff8018a978f7

BSD process name corresponding to current thread: kernel_task Boot args: dart=0 darkwave=10 rp=file:///com.apple.recovery.boot/BaseSystem.dmg

Mac OS version: Not yet set

Kernel version: Darwin Kernel Version 16.7 0: Thu Jun 15 17:36:27 PDT 2017; root:xnu-3789.70.16~2/RELEASE_X86_64 Kernel UUID: D3314D98-5D40-3CD8-98A4-F1DD46C20E03 Kernel slide: 0x0000000018800000 Kernel text base: 0xffffff8018a00000 __HIB text base: 0xffffff8018900000 System model name: iMac18,3 (Mac-BE088AF8C5EB4FA2)

System uptime in nanoseconds: 1362233966