3DO:
http://www.1up.com/do/blogEntry?bId=9085540

Pippin:

http://www.forbes.com/2008/10/29/apple-product-flops-tech-personal-cx_ag_1030apple.html

LaserActive:

https://laseractive.wordpress.com/about-the-laseractive/

http://segaretro.org/LaserActive

Neo-Geo:

http://www.hitc.com/en-gb/2014/02/04/200-a-game-we-look-at-the-90s-powerhouse-console-the-neo-geo/

https://www.quora.com/Video-Game-Consoles-Why-did-the-SNK-Neo-Geo-fail

Gizmondo:

https://www.youtube.com/watch?v=jFDAqJwVDEU

N-Gage:

http://www.xbitlabs.com/news/mobile/display/20091105190901_Nokia_Buries_N_Gage_Completely_Admits_Failure_to_Become_Maker_of_Game_Consoles.html

Atari 5200:

http://www.anchorofgold.com/2015/4/17/5794428/schadenfreude-fridays-atari-5200-video-game-failures-coleco-intellivision

Multiple consoles:
http://techland.time.com/2010/11/04/top-10-failed-gaming-consoles/