amd.com redirects to https://www.amd.com/en-us which comes up with "401 UNAUTHORIZED".
found amd.com/en (had to cut the https://www. because the forum wants to grab the site title and replace the URL) in a search engine result at the bottom of the listings, and it works.
you guys may want to fix your website - it has been down at least 8 hours for anyone reaching it via amd.com judging off this page's comments: http://isitdownrightnow.com/amd.com.html
This is *probably* the wrong place to put this thread (general is probably more appropriate) but when I came across past posts on this sort of thing on the AMD forums they were always under this topic so here it goes.
Have a good one.