Hi Linzwithaz,
Please share the model of the Dell wireless card that you have installed. You may update the latest BIOS. Please refer to the link: http://dell.to/15rl5Vq.
Note: Before Note updating BIOS please ensure that:
*Battery is 10%> or >10% charged
*Battery charger should be connected
*No external devices (flash drives, printers, external hard drives) should be connected.
*All other programs should be closed and documents saved
Keep me posted with the findings. I will be glad to assist further.