So I upgraded to windows 10 on release, but did not experience this issue until I got a Fury X installed. I moved up from a 7970+7950 to a Fury X+7950. The 7950 drives my secondary displays - a 4k, a 2k, and a portrait 1080p. The Fury X drives my very large 1080p TV. when hardware accel is off, everything works, but no hardware accel on a 4k30hz is a nightmare. When I turn hardware acceleration on, it looks like the all white image I've uploaded... but only on monitors with the 7950. It doesn't crash, it just doesn't work. if I drag it to the fury monitor and maximize, it works. if I drag it back, it's white. The image below shows it working. I've done the basics. I tried safe mode, all addons disabled, and even a complete wipe of firefox and profile, no sync, including %appdata% folder - this still occurs on a fresh install. my GFX drivers are up to date and were cleanly installed on release. I tinkered around in about:config but can't really make sense of much without a ton of googling and nothing is working. I've been at this on and off a couple weeks and I'm officially at my wit's end. I work in malware removal and onsite response and dabble in malware analysis - rest assured, we can rule out infection early on. let me know if there is any info I can upload or paste and ANYTHING that might possibly work. I'm dying. my 4k is my browsing and reading display and firefox is my buddy and I refuse to transition to chrome because chrome for work crap.