Laptop will not connect to WiFi but will through ethernet

I recently purchased a new router, N300 Wireless Dual Band ADSL2+ Modem Router (model DGND3300v2), due to my old one being incredibly outdated. In order to set up this router I had to connect to it via an Ethernet cable, I set it up easily without any issues arising. All other members of my household have successfully connected to the WiFi with the only issue being that it broadcasts two different connections, those being 11N SSID and 11G SSID, with 11G SSID being very unreliable in that it only works occassionally. My laptop is an Asus X555LD. The main issue is that I only get the 11G SSID connection made available to me which then doesn't let me connect to the connection, instead displaying a message saying "Unable to connect to Network".

I have tried to remedy this through the following methods:

• 
  /ip release
  /ip renew
  Checking for updates on my driver
  Adding the MAC address of my laptop to the trusted devices area of the settings on the router login page

Some extra information that might help:

C:\Users\Asus>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Athena
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter WiFi:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Qualcomm Atheros AR956x Wireless Network Adapter
Physical Address. . . . . . . . . : 30-10-B3-47-D4-85
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Local Area Connection* 3:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
Physical Address. . . . . . . . . : 12-10-B3-47-D4-85
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 1C-B7-2C-0F-94-5D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::79e6:9557:ef72:3c90%7(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.0.2(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 01 March 2016 16:53:42
Lease Expires . . . . . . . . . . : 02 March 2016 17:20:53
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DHCPv6 IAID . . . . . . . . . . . : 54013002
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1D-5B-6E-BE-1C-B7-2C-0F-94-5D
DNS Servers . . . . . . . . . . . : 192.168.0.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{F2441528-345A-454A-BE8A-D6B7DA773C8E}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:6ab8:1044:2eaf:a7ae:7ded(Preferred)
Link-local IPv6 Address . . . . . : fe80::1044:2eaf:a7ae:7ded%2(Preferred)
Default Gateway . . . . . . . . . : ::
DHCPv6 IAID . . . . . . . . . . . : 335544320
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1D-5B-6E-BE-1C-B7-2C-0F-94-5D
NetBIOS over Tcpip. . . . . . . . : Disabled

Any help would be much appreciated! I don't have very much knowledge in terms of this stuff so I'm also gonna apologise in advance if I'm a little slow on the uptake. Thank you!