Hi MrMoneyMaker
I looked over your thread in the update forum, sorry that it was such a long struggle. Considering all the difficulty and complications that cropped up in those efforts, I think it would be a good idea to run some diagnostics before moving to install Windows 10. Once the hardware proves to be OK, that clears the way to concentrate on software. Otherwise we might be try to fix a hardware issue with a software repair ... not very successful, generally.
Another reasonable pre-installation step would be to create a bootable Antivirus "Rescue CD" and scan all the files on your "spinners" & any other backup sources. Malware presence re-introduced into a freshly installed system from infected backups is a guaranteed way to have a very bad day. Let's avoid that. The easier to use "Rescue CD"s are from AVG, Avira, and Avast. From a known-clean, working computer that has Avast installed, you can create an Avast Rescue CD simply by selecting it from the Tools menu. The AVG and Avira Rescue CDs and be downloaded for free from their support websites.
If your computer has diagnostics built-in, run those, as thoroughly as possible. Such diagnostics, on some computers, are available by pressing a function key at system power on time -- the details would be in the user guides provided by the manufacturer. Should those diagnostics prove lees than thorough, or if no built-in diagnostics are available, you can try using MemTest86+ to test the system memory, and using the hard drive diagnostics from the support website of your hard drive manufacturer's website. SSDs are so new, it would seem best to test them with diagnostics provided by their manufacturers as well. Should all diagnostics pass with flying colors - on we go to installing Windows 10.
If you need a good bootable cd with some diagnostic tools on it to simplify running the diagnostics: a reasonable (and free) choice is the UBCD (for "ultimate boot cd") ... a free Linux-based diagnostic tool that includes MemTest86+, and diagnostics for several manufacturer's hard drives.
Ultimate Boot CD - Overview
Before Installing Windows 10
1) Save your product license keys for Windows 7, and for significant software packages that require a product key during installation (such as Microsoft Office, DVD recording software, etc.). If you don't have the product keys handy for whatever reason, try Belarc Advisor, & see if it can retrieve the licenses.
Belarc Advisor - Free Personal PC Audit, for software, hardware and security configuration information on your computer. Software license management, IT asset management, cyber security audits, and more.
2) It sounds like you already have backups of most of your personal data. If so, visit those backups to ensure their health. And backup anything else you want to keep that hasn't already been saved.
3) Use the Media Creation tool to create an up-to-date Windows 10 DVD... Download the .iso, and use the "burn image" option in DVD recording software to create a bootable Windows 10 DVD. Regardless of your previous version of Windows, I recommend creating a 64-bit image for installing Windows 10. Download the .iso for the same version (Home, Pro, etc.) as the one you had with Windows 7 - so that your Windows 7 product key can be used during the upgrade.
4) Once all personal data has been backup up, and product keys found and saved, erase your SSD drive, and unplug your 'spinners'.
The plan will be to clean install Windows 10 onto your 120 GB SSD. It will only contain Windows 10 system files and the "swap file" (also called "page file"). After Windows 10 is successfully installed onto the SSD, you can then shutdown the computer, and plug in your "spinners". When installing programs, make sure to have them install to the large HDD. You'll have to keep an eye on disk space usage on the SSD, and make sure no unnecessary space-wasters end up on the drive.
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To install Windows 10 from the DVD, the CD/DVD drive will have to be able to start the installation. If your computer has a function key that produces a Boot Menu at system power on time, use that to select the CD/DVD drive, insert your Windows 10 64 bit DVD, close the tray, if asked, press any key to boot from the DVD, and follow the onscreen instructions to install Windows 10. It's really quite straightforward.
I recommend linking the installation to a Microsoft account - that will allow you to more easily receive updates for the Windows Store programs on your computer, and to easily access any free programs (or the for-a-fee programs, should you wish to try any of those, too) in the Windows Store. A Microsoft account also makes it easy to synchronize documents, work data, and such residing on multiple PCs - by using OneDrive (Windows 10's builtin online storage app). When asked who owns this pc ... be sure to say that you do, and not a company, unless you want unending headaches to follow you the rest of your life. (You wouldn't be posting on this forum, after all, if your computer had a full IT department from a company behind it)... Other tips would be to setup OneDrive when prompted... the free storage is nearly always ample enough for documents (so you can set up the documents as the first thing to be saved to OneDrive.... then see if you qualify for more than just 5 GB of space --- if so, you can always then add your pictures & such to the OneDrive online storage [If you happen to have purchased Office 365, you automatically have at least 1 TB of online storage at OneDrive.... plenty for docs, pics, you-name-it.
DO NOT INSTALL ANY THIRD-PARTY ANTIVIRUS, and let the Microsoft antimalware modules built into Windows 10 handle things for the first few hours (the protection is mainly contained in the "Windows Defender" & "Windows Firewall" components). Later, if you wish, install the antivirus of your choice. For tech-savvy users, I recommend Avast Free Antivirus as the single real-time antivirus, and let the perfectly capable Windows 10 Firewall handle the basic firewall chores. Avast should disable Windows Defender during it's install. You do not need any more protection than this...
On your freshly installed Windows 10 machine:
PLEASE DO NOT INSTALL
IOBit Advanced System Care
Asus AI Suite
Everything.exe
GlassWire (you can install this only if you make absolutely sure no other firewall is in use)
... or any of the programs on the "Programs to Avoid" document that I've attached to this post.
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I'm dozing off at my keyboard ... it's been a very long day... good luck with your installation process, and let us know if you have any questions...
Good night
P.S. ... by the way: during the Windows 10 install, enter the product key from your Windows 7 system: Windows 7 users qualify for the free upgrade to Windows 10 so long as the installation is done by July 29th, 2016. [You do NOT have to install Windows 7 first, then 10. Just install 10.]