Hello, all. After a couple of months researching/battling this problem, I thought I'd reach out & ask my fellow Optiplex enthusiasts.
I have upgraded a fleet of 30-ish Optiplex 580s (desktop chassis specifically, but I have a single mini-tower that does this, too) to Windows 10. Many of them have been clean-installed, even with new SSDs.
My problem is display/video "breakup," like fuzzy pixelated blobs that appear across the screen, often blinking, after the system has been up & running for a while. A restart cures the problem every time. The problem is actually more prevalent on systems that have been clean-installed. Upgraded units (from Win7) also exhibit the problem.
I found an article on tenforums suggesting the 13.4 legacy beta driver, directly from AMD can resolve issues, but after performing this driver change there is absolutely no change in behavior. (https://www.tenforums.com/graphic-cards/11630-ati-radeon-hd-4200-driver-64-bit-windows-10-a.html)
It seems to happen more often (maybe exclusively, but I use a Precision T1650 so I can't be sure) when the system wakes up after sleep. I've considered just recommending some low-cost video card add-ins but it seems there might be an answer lurking out there somewhere.
Other than that, the systems run absolutely beautifully with Samsung 850 Pro EVOs. Obviously the 580 is a great candidate for Win10, with 16GB max ram, quad-core possibilities, and onboard digital video, so I'd hate to throw any of them away. Hardware configuration is as follows:
Optiplex 580 Desktop
AMD X2/250 dual-core procs
2x2GB RAM
Monitor plugged into the VGA out
Samsung 850 EVO Pro 256 or 512 GB SSD
Also have systems with original mechanical hard drives exhibiting the issue
Windows 10 Pro 64-bit Anniversary Edition, recently downloaded with the MS Tool
Thanks for any suggestions or thoughts!
John