PC Fails to Boot Anything, Even Windows 7 Setup

I recently upgraded my PC from an AMD board & CPU to a Skylake system. The specs are as follows...

CPU: i7 6700k
MB: MSI Z170 Krait Gaming 3x
GPU: Gigabyte G1 Gaming GTX 1080 
SSD: Corsair 525GB MX300 (and a 1TB seagate hybrid drive)
PSU: EVGA Supernova NEX 650w
RAM: Corsair DDR4 16GB Vengeance LPX 

Problem: My hard drive, being leftover from the other computer, still has Windows 7 on it (which won't boot because of the old drivers). This shouldn't be a problem though, as I want to install a fresh copy of Windows on my SSD. However, every time I try to launch the windows 7 setup (either in the form of a bootable USB or a bootable CD) it crashes after "Windows is Loading Files", around the time the four dots come together on the starting windows page. No crash message, just a sudden shutdown.  

I've tried to:
Boot with one Ram Stick
Boot with XMP turned on
Boot with integrated graphics
Boot setup in safe mode (which worked, but it can't complete the installation in safe mode and it won't boot outside of it)
Format my SSD to GPT
Boot old HDD in safe mode (which does work, but only for about a minute until it freezes and becomes inoperable)
Install the latest version of BIOS on my MB

I'm at a bit of a loss... Not sure if this is hardware or software related; in fact, I have not the slightest clue what this is related to at all. Am I missing anything?

Thanks in advance!

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Clarification Request
Have you read this?
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Excellent find.

I think I'm not seeing that as all my clients have or are moving to W10.

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Use only 1 drive...

At least for the initial OS install. This eliminates any hassle from the 2nd drive if at all being a source of the problem. the main drive you plan to use, then restart the install process. It should offer where you want to install and select either the main C partition or overwrite the current "main active partition". If the problem persists and you've done all you can, usually I like to wipe clean the drive being used. It just prepares the drive afresh and awaits the install w/o any old data or setting getting in the way. If you plan to use the SSD as the main boot drive, review what the maker offers to proceed, maybe even get the s/w they provide to better perpare your drive in this regard. SSD, can be a hassle at times if too old or truly used heavily. Once the issue seems to be resolved, then add the 2nd drive into the setup. I also suggest you use the 1st SATA port to best address the main drive during install.

I use KILLDISK or DBAN which using the freebie s/w really cleans-up the drive for re-use. I exclude any possible vendor s/w, which may prepare their product within guidelines they use. It certainly wouldn't hurt to review any support they have on the topic, which many offer.

tada -----Willy Happy

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I tried

Unfortunately I've already tried this ): Also, I can't even get into the setup to chose which drive I'd like. Any other ideas?

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The first thing you want to do is swap that quad rail unit for a single rail unit.

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I'm reluctant to buy a whole new power supply (that is plenty of power for this system and worked reliably on my other system) unless I'm certain it's the problem...

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I've read that issue before

And you have to let the owner stew till they figure out quad rail units do not have plenty of power where it counts. The power is on many rails and may not be where it's needed.

I'm not writing that's it, but it's a common issue, complaint and we let them stew till nice and soft.

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You've spent 100's building that rig and now you won't spend 70 bucks to fit in the proper psu?

Your call.

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It may be less than that. Here
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The video above seems to indicate that it doesn't matter, so why does it in this case?
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Your choice.

Let's dive into that 20A rail. Remember to keep out of trouble and get long life we derate that to 10A. That's 120 Watts. The 1080 alone is 120 Watts. So how are you sure the rail is not being used by anything else?

This is a known bad PSU selection. You can balk, discuss it all you want.

I would not use such if I want a stable gaming PC. Fine for an office machine where we pop in just the CPU with it's onboard graphics so there are places where this fits.

PSU makers and sellers are going to tell you it's OK. I won't.

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I see, that makes sense. Thank you for explaining it for me! I learned the basics of power supplies, enough to suffice for my first build but obviously I still have some uncharted territory here that this experience will no doubt teach me about; for that much, I am thankful!

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I'm more than willing if it will fix my problem, but not if this is a troubleshooting step. As long as you can to a certain extent "guarantee" within your knowledge that this will fix my problem. If you wouldn't mind explaining why this power supply would've worked so well on my other PC where as here it can barely boot the system, it would make the purchase easier. Thank you for your help!

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Let's see if anyone DARES to tell you that.

At the shop we'll slip in a single rail to find out. It's part of how we sort this out. You are battling a few issues here, the awful PSU, the FACT you formatted the SSD rather than letting Windows do that for you and boot issues.

When you decide you get tired of all that, I see a lot of good advice here. You're fighting it. I find time seasons such clients.

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Of course I'm fighting it, that's the only way to learn! It's also fair to mention that I spent 5 hours on the line with windows support, who, as well as running me around in troubleshooting circles, diagnosing me with a cold before they've heard all my symptoms (so to speak), they told me to format the SSD to GPT. You must forgive me if I'm a little reluctant to wholeheartedly jump into a diagnosis without a little information! That being said, I purchased another PSU - hopefully this will make the difference, thank you for your help!

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New power supply and I'm still experiencing problems! Having a hard time staying calm, this is certainly maddening

Any other ideas as to what it might be? While I was waiting for my power supply, I tried the boot disk on another system and it worked fine. On the bright side, it's one more thing I've eliminated as the issue.

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What new PSU

are you using now?

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Keep in mind

There were many missteps in that PC. Tell what PSU you got and if you corrected that issue with the formatting of the SSD.

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"Format my SSD to GPT" Don't.

Just leave the drive you want to install to BLANK. That is no partitions. Windows will partition and format as required.

Look around the BIOS for options to show the boot menu, set the first boot device and disable fast boot for now.

Now about your Windows 7 install media. Duplicate it and test that it boots on other PCs. Just booting it is all we need to test. Do not proceed with anything past that so we do no harm to the other PC's installed OS.

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what version of windows 7?
" every time I try to launch the windows 7 setup (either in the form of a bootable USB or a bootable CD) it crashes after "Windows is Loading Files", around the time the four dots come together on the starting windows page. No crash message, just a sudden shutdown. "

Is this CD an OEM version, or a store bought retail version of w7? Have you tried booting from a free Linux LIVE CD or DVD to be sure it's not hardware related?

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