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Z370 Professional Gaming i7 Boot Issues
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Xaltar View Drop Down
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Points: 27728 		Post Options Post Options   Thanks (1) Thanks(1)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Topic: Z370 Professional Gaming i7 Boot Issues
    Posted: 18 Mar 2018 at 7:09am
Awesome, glad to see you got it sorted Big smile

Enjoy the build Thumbs Up
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Hey Guys,

Thank you both, I really appreciate the time spent here helping me with this issue. I was feeling pretty alone / lost here and all the tips and support really helped. I wanted to let you know that it was in fact the power supply.  I replaced my old cosair 750 with a new rmx750 today and it booted up with no issues, plowed through the install and is running stable. 

This morning, I found one other rogue article where another person had the same issues, posting fine and stable in the BIOS but instant reboot when accessing a known good drive. This is apparently a good indicator that the PSU is bad. 

Again, I really appreciate your assistance.
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Points: 6447 		Post Options Post Options   Thanks (0) Thanks(0)   Quote wardog Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 2018 at 8:59am
gbever, read that PM I just sent you. ie Tech Support call from me, anytime that is in your schedule
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To me it sounds like what happens when one moves a preinstalled drive from one machine to another differant machine hoping it will boot up properly specially with pre Windows 10 OS. It could be possible Windows is trying to load a driver incompatible with the hardware if not using a retail Windows disk (some OEM disks contain specialized drivers for specific hardware/bios/etc). It also could be the "reboot" issue found after bad Windows 10 updates but doubtful on a new install from DVD. If the SSD was not new and had a previous install and Bitlocker was ever enabled and the small hidden system partitian was not removed then the new Windows could prevent bootup when it sees that. Another thought is disable CSM, is in BIOS on the bottom of Boot page, and see if that helps.
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Make sure your power connectors are firmly seated and try reinstalling the OS again.

Failing that working I would pull the CPU, make sure the contact pads are clean and free of debris and check the socket for bent pins. If all is clear there and you are still having the issue, wait for the new PSU to arrive and try that. If you really want to eliminate all possible external factors you can try bench running the system (outside the case resting on the motherboard box) and see if that resolves any issues.

This one has me scratching my head a little. Stable in UEFI but not loading windows..... 
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gbever Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 2018 at 4:27am
I see after some research that the "screw" I was referring to is an m2 standoff. That is probabally not the issue.
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I made sure XMP was enabled and when I restarted the settings looked good. Then I updated to bios 1.60 with no issues and I still have the same problem.

I also noticed something else. There was a little strange silver screw in the box with my motherboard. I can see where it comes from, there are several holes on the board and in the two next to eachother in the center in the manual show screws, and one of mine is missing. Could that be causing any issues as well? I also noticed that one of my fan 3 pins is bent too, I know I didnt do that so Im wondering if this is actually a new board or not ( from newegg RMA) ...

My previous board didn't seem to have this issue but I still had the same problem so Im not sure if it is related to anything.
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Enable XMP, that will set it to the correct settings. And yes, that is normal Wink
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gbever Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 2018 at 1:38am
I just tried clearing the cmos. It presented me with a message on the initial boot that it had reset everything. I reconfigured the boot order and gave it another shot with the same result.

Does it matter that in the Bios, it shows me that the ram is seen correctly, cas timings and voltage, but in the ram display it shows 2133 instead of 3200?
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Step 1: Clear CMOS Wink

Ever since we moved from BIOS to UEFI this has been an important step. The UEFI is much more advanced and allows a lot more control but the down side is that it has a tendency of not clearing old settings when new devices are installed. This creates conflicting data that can cause issues. This is why it is always good to clear CMOS every time you make any significant hardware change. 
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