Originally Posted by Sly

I have 4 3-year-old Windows machines, I upgraded all of them to Windows 10 without your issue. It's likely not a problem with your hardware or a mass conspiracy to get you to buy a new computer. Obviously something is wrong, but you are reading far too much into it. Try contacting their support.

For the record, I had a bitch of a time upgrading my one week old iMac to Yosemite when it came out. I'm delaying upgrading my iPhone to the new iOS as well since the last 2 iOS upgrades I've done were an absolute nightmare. Apple is not some magical pill.