Can't configure my 3 screen working station

I just purchased 3 screen "DELL U2414H" and a new computer. The happy unboxing time turned to a nightmare when the noob I am could not connect the 3 screen to the computer like the guy is doing in the youtube video.


Screen Info

What I am trying to do
This guy is connecting his screens to each other than to the PC but I am unable to achieve it.

My Computer Spec :
Asus ROG G20 Desktop PC i7 12GB 1TB NVIDIA GTX750

- CPU : Intel® Core™ i7-4790 (8M Cache, up to 4.00 GHz)
- OS : Windows 8.1
- Memory : 12G DDR3 1600MHz
- Storage: 1TB SATA (100G ASUS westorage 1years)
- ODD : Blu-Ray 8X Combo
- LAN : 10/100/ 1000 Mbps
- Audio : 8-channel Audio SonicMaster
- Card readerN/A
- Front I/O
- USB3.0 x 2
- Mic Port x 1
- Earphone port x 1
- back I/O1 x RJ45 LAN, 1 x HDMI-Out
- 1 x 8 channel Audio
- 2 x USB 3.0 4 x USB 2.0
- 2 x Power jack
- power supply: 230WAdapter
- certificates : BSMI/CB/CE/FCC/UL/CCC/Energy Star/VCCI

Graphic Card Spec:


Posts: 4,049   +13
As far as I can tell, Nvidia doesn't support Surround (three monitors) via daisy-chaining (the card in the video was AMD Radeon). You might be able to get two monitors to work like that - some sort of DisplayPort MST support was added a while ago because of tiled 4k displays - but to get them all working they need to be plugged to the card directly.

As GTX750 doesn't have proper connectors, you might need to change your graphics card to something that has three DP outputs or 2xDP + HDMI.