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New desktop (MSI Z170A Gaming 5) won't post, shows various debug codes

capnhist

Prominent
Nov 24, 2017
3
0
510
0
I just built my new system today, and it won't post. The debug led on the motherboard showed 49, so I reseated the RAM, then it showed 35, and after another power cycle it shows 50/51. What is going on? Do I have a faulty component somewhere, or did I make a mistake in the construction?
 

capnhist

Prominent
Nov 24, 2017
3
0
510
0
1. I carefully read the manual.

2. I connected the 8pin power

3. I installed standoff

4. I fully seated the video card

5. I confirmed all power to video card is attached and fully seated

6. I have tried booting with RAM in all possible configurations: stick a in slot 2/stick b in slot 4, a4/b2, a1/b3, a3/b1, a1, a2, a3, a4, b1, b2, b3, b4

7. Memory is fully seated

8. Confirmed in manual and on mobo that I'm using the correct memory slots.

9. Plastic CPU guard is removed

10. CPU is installed correctly

11 & 12. I'm not ready to take the CPU apart right now

13. CPU fan is plugged in

14. Used an aftermarket cooler, but all protective covers were removed

15. No loose screws (shake test) and no wires under mini (installed before running any wires)

16. Static was discharged

17. No audio system installed

18. Confirmed LED pins were correct, removed reset switch

19. Power plug/switch oriented properly

20. CPU is compatible with bios (i7-6700k)

21. No post, so no BIOS

22. Already using integrated video

23. All cables/ components properly seated

24. Removed video card to check, still no post. Removed SSD and it posted. Got to BIOS menu and changed settings. Reconnected SAD and installing Windows now. Real test is if the system works after reinstalling video card!
 

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