Finally beat the July 28th deadline for upgrading Windows 7 to Windows 10.
Made backups with Macrium Reflect first. Paid for that one, got rid of the perpetually flaky Acronis.
Both machines (Intel Core Duo 2Ghz dual-core and old AMD dual core) upgraded successfully. AMD box slow, but it worked, with install apps and files in place. A little juggling the start menu to lose the junk, and we are back in biz.
A potential issue came up where the audio was crackling. One post suggested the LatencyMon app from Resplendence Software. Way cool. Said I had serious latency issues and could not host real-time software – like audio. Duh.
This post, Speakers Crackling since Windows 10 update, suggested I reinstall the old audio driver. Not trying that yet.
Ultimately, this YouTube video, How to FIX Windows 10 Audio/Sound Problem , worked by running the non-low-power power profile. Not sure why that matters – tries to starve the CPU? Seems to work.
Then I replaced the CPU with Intel Core 2 Quad Q9650 3Ghz from eBay for $65. Windows 10 rebooted and barfed a few times; I had to reset the BIOS to even have Windows 10 detect the new CPU. Then I had an issue with the CPU fan, but I think that was related to the dust buildup. 5 minutes with the compressor outside cleaned it out, and using the great HWMonitor program, cores are running 100-110F. Not bad. The machine runs very smoothly with the new two cores, for very little coin.