XPS 8300, wire ID

What model computer? The pictures will not show up for us until approved by a moderator. 

Also explain what problem you are having now and what you were doing when you tore the wires.

It is an XPS 8300. It is the black wire and white wire that run from the front panel, around the PSU and over to the fan. It now will not power on. 

I was removing a graphics card, and these wires were caught on it.

It will go orange for a moment and do a fan spin up and stop

Assuming you didn't pull the "fan" end of the cable out of its connector, see where it actually connects on the "fan" side. If it connects to the motherboard, the connector should be labeled right on the board. It might be F_PANEL for the front panel connector or F_USB2 for the front USB connector.

You can read more in the Service Manual. Once you are clear exactly which cable got broken, you can contact Dell Spare Parts and see if they sell that cable separately.

https://www.dell.com/support/home/us/en/04/product-support/product/xps-8300/manuals

https://downloads.dell.com/manuals/all-products/esuprt_desktop/esuprt_xps_desktop/xps-8300_service%20manual_en-us.pdf

There are 27 connections. DH67M01 Motherboard

Black wires DOES NOT Identify what you are talking about.

1 power connector (PWR2)
2 processor socket
3 processor fan connector (CPU_FAN)
4 memory module connector (DIMM3)
5 memory module connector (DIMM1)
6 memory module connector (DIMM4)
7 memory module connector (DIMM2)
8 main power connector (PWR1)
9 password reset jumper (PSWD)
10 CMOS reset jumper (RTCRST)
11 SATA drive connector (SATA 0)
12 power button connector (F_PANEL)
13 SATA drive connector (SATA 1)
14 front panel USB connector (F_USB1)
15 SATA drive connector (SATA 2)
16 front panel USB connector (F_USB3)
17 SATA drive connector (SATA 3)
18 battery socket (BATTERY)
19 front panel USB connector (F_USB2)
20 front panel USB connector (F_USB4)
21 front panel audio connector (F_AUDIO1)
22 PCI Express x1 card slot (PCI-EX1_3)
23 PCI Express x1 card slot (PCI-EX1_2)
24 PCI Express x1 card slot (PCI-EX1_1)
25 PCI Express x16 card slot (PCI-EX16_1)
26 Mini-Card slot (PCIE_MINICARD)
27 chassis fan connector (SYS_FAN 1)

THESE ARE NOT DOCUMENTED.

Motherboard Connections

I don't see a solution for this 3 years later. Those 2 wires connect to your onboard wifi.

@JJTatum 

Those Black and White Wires are the antenna leads to the WIFI card.  Nothing whatsoever to do with Power on.

xps-8300 docs

xps-8300_service manual

ITEM 26  mini pci wifi card

XPS 8300 Motherboard connections