Hi firewire:
Bassfisher was referring to something Microsoft calls the
WINDOWS 10 COMPATIBILITY TEST. Did you run this prior to your Win10 upgrade? It doesn't sound like you did. If you are using an older version of Photoshop or other apps from the earlier version of windows on your computer, it's probably not compatible with Windows 10. The Win10 Compatibility Test would have told you this. Unfortunately, Microsoft doesn't publicize this well, and the have had programs doing this for the last 15 years, so the average home user isn't aware that it exists, or that it's needed, or even what it does.
The program checks first of all if your PC or laptop meets the minimum hardware specs needed to run the new Windows OS (Win10) such as your CPU, BIOS, Motherboard, RAM speed, GPU card/chip, etc. If it doesn't meet those specs, the program tells you this. Next, the Test checks your drivers on the above devices as well as applications or programs. Microsoft is pretty good being able to tell when an old program will no longer work on their new OS; as many of the big companies (such as Adobe who makes Photoshop) submits their programs to Microsoft for certification with the new Windows version (Win10 in this case).
If you don't resolve the hardware specs, that computer will never run Win10 and must be replaced. You say the upgrade completed, so it's probably compatible at least at the hardware level. However, it probably has programs you had on there such as Photoshop which are
NOT compatible with Win10. The best way to check this is to go to the program manufacturer's website (Adobe in this case) and see if they have a new version on their website that states it's Win10 compatible; if so, and that version number is newer than the version of the program you are trying to run, yours is outdated and must be upgraded or replaced entirely. The good news is that if you are Registered and Legit owner of the Photoshop program, you can call Adobe and get a discounted upgrade to the new version that is Win10 compatible!
Next, we could help you more if you tell us the Make/Model of your desktop PC. Is it an
OEM PC, such as Dell, HP, Gateway, Acer, etc.? Or is it a self-built PC or a custom-built PC (bought from a computer shop)?
You're welcome to go back to Win7 as you stated, but you simply didn't have the right information available to you to do the upgrade properly. Lots of us Windows10 Insider Testers ( a large group of volunteers who helped Beta test the Win10 for Microsoft) have asked Microsoft to more widely publicize the Compatibility Test. No luck so far, sorry about that. About 98% of my customers who attempt the Win10 upgrade on their own, fail to do it correctly and then have to pay me or another computer professional to fix what they messed up! On the various Tech forums I volunteer on; we see thousands or even tens of thousands of people who have the same problem you did. And we help then as best we can, but the Win10 is not a self-installable upgrade IMHO, and I tell all my clients this. Most do not listen, as they cannot resist the urge to click the little White Flag in their system tray and assume it will work without any hitches! That's good for me, but bad for MS reputation on the ease-of-use front.
You didn't mention any other problems you were having with Win10 except this one program (Photoshop), so why don't you do the research and contact Adobe and get the new Win10 compatible version of the program and be on your way to better productivity? Of course if you can't afford to do this or just don't like the new Photoshop or just don't like learning new programs, then back to Win7 you go.
Best of luck,
<<<BIGBEARJEDI>>>