![Apple iMac (27-inch, September 2013) review: New processors and faster Wi-Fi for Apple's slim desktop - CNET Apple iMac (27-inch, September 2013) review: New processors and faster Wi-Fi for Apple's slim desktop - CNET](https://www.cnet.com/a/img/resize/0df5ab98e29a9416a5576cd29efbd3eb19aabdd7/hub/2013/09/26/8e0aac40-67e4-11e3-a665-14feb5ca9861/35827456.jpg?auto=webp&fit=cover&height=482&width=856)
Apple iMac (27-inch, September 2013) review: New processors and faster Wi-Fi for Apple's slim desktop - CNET
![display - Using iMac late 2013 as external monitor to HP EliteBook 820 G3 on Windows 10 - Ask Different display - Using iMac late 2013 as external monitor to HP EliteBook 820 G3 on Windows 10 - Ask Different](https://i.stack.imgur.com/yiYm2.png)
display - Using iMac late 2013 as external monitor to HP EliteBook 820 G3 on Windows 10 - Ask Different
![display - Using iMac late 2013 as external monitor to HP EliteBook 820 G3 on Windows 10 - Ask Different display - Using iMac late 2013 as external monitor to HP EliteBook 820 G3 on Windows 10 - Ask Different](https://i.stack.imgur.com/MPnI1.png)
display - Using iMac late 2013 as external monitor to HP EliteBook 820 G3 on Windows 10 - Ask Different
![Can someone tell me what is broken here ? This is my late 2013 IMac. It stopped showing things a couple days ago but an external Monitor shows everything. The screen is Can someone tell me what is broken here ? This is my late 2013 IMac. It stopped showing things a couple days ago but an external Monitor shows everything. The screen is](https://preview.redd.it/qkbueto1mk581.jpg?auto=webp&s=e14a648d43a7775ce23534708dd017b073fe3ab9)