"The default gateway not available" Windows 8

For about two months my wifi has been going out and will just say limited and the entire time I was yelling at Comcast for being crappy, when little did I know it was actually my computer than was having the problem since when I plug it up with the Ethernet cable it works just fine without going out so I was wondering if I could have some help resolving this issue. Here is my ipconfig stuff since I know you guys are going to ask for it.

This is how it looks when the net is fine

Microsoft Windows [Version 6.2.9200]
(c) 2012 Microsoft Corporation. All rights reserved.
C:\Users\Amir>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : PoopMachine
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : hsd1.ga.comcast.net.
Wireless LAN adapter Local Area Connection* 11:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
Physical Address. . . . . . . . . : 68-94-23-40-ED-7D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Wi-Fi:
Connection-specific DNS Suffix . : hsd1.ga.comcast.net.
Description . . . . . . . . . . . : Ralink RT5390R 802.11bgn Wi-Fi Adapter
Physical Address. . . . . . . . . : 68-94-23-40-ED-7B
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2601:0:ae00:165:11f4:4983:ed9c:b7c(Prefer
red)
Temporary IPv6 Address. . . . . . : 2601:0:ae00:165:d15d:3b6f:576e:9915(Prefe
rred)
Link-local IPv6 Address . . . . . : fe80::11f4:4983:ed9c:b7c%14(Preferred)
IPv4 Address. . . . . . . . . . . : 10.0.0.7(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Monday, June 2, 2014 1:40:36 AM
Lease Expires . . . . . . . . . . : Monday, June 9, 2014 1:40:41 AM
Default Gateway . . . . . . . . . : fe80::5e57:1aff:fe99:e8c1%14
10.0.0.1
DHCP Server . . . . . . . . . . . : 10.0.0.1
DHCPv6 IAID . . . . . . . . . . . : 258511907
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1A-E3-B6-10-4C-72-B9-B3-A9-10
DNS Servers . . . . . . . . . . . : 2001:558:feed::1
2001:558:feed::2
75.75.75.75
75.75.76.76
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Ethernet:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : hsd1.ga.comcast.net.
Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
Physical Address. . . . . . . . . : 4C-72-B9-B3-A9-10
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter isatap.hsd1.ga.comcast.net.:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : hsd1.ga.comcast.net.
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 12:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft 6to4 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. . . . . . . . . . . : 2001:0:5ef5:79fb:38db:2fe:b39e:dfd4(Prefe
rred)
Link-local IPv6 Address . . . . . : fe80::38db:2fe:b39e:dfd4%17(Preferred)
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled
C:\Users\Amir>

This is when its limited.

Microsoft Windows [Version 6.2.9200]
(c) 2012 Microsoft Corporation. All rights reserved.
C:\WINDOWS\system32>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : PoopMachine
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : hsd1.ga.comcast.net.
Wireless LAN adapter Local Area Connection* 11:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
Physical Address. . . . . . . . . : 68-94-23-40-ED-7D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Wi-Fi:
Connection-specific DNS Suffix . : hsd1.ga.comcast.net.
Description . . . . . . . . . . . : Ralink RT5390R 802.11bgn Wi-Fi Adapter
Physical Address. . . . . . . . . : 68-94-23-40-ED-7B
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2601:0:ae00:165:11f4:4983:ed9c:b7c(Prefer
red)
Temporary IPv6 Address. . . . . . : 2601:0:ae00:165:d15d:3b6f:576e:9915(Prefe
rred)
Link-local IPv6 Address . . . . . : fe80::11f4:4983:ed9c:b7c%14(Preferred)
IPv4 Address. . . . . . . . . . . : 10.0.0.7(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Monday, June 2, 2014 1:40:35 AM
Lease Expires . . . . . . . . . . : Monday, June 9, 2014 1:40:40 AM
Default Gateway . . . . . . . . . : fe80::5e57:1aff:fe99:e8c1%14
10.0.0.1
DHCP Server . . . . . . . . . . . : 10.0.0.1
DHCPv6 IAID . . . . . . . . . . . : 258511907
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1A-E3-B6-10-4C-72-B9-B3-A9-10
DNS Servers . . . . . . . . . . . : 2001:558:feed::1
2001:558:feed::2
75.75.75.75
75.75.76.76
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Ethernet:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : hsd1.ga.comcast.net.
Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
Physical Address. . . . . . . . . : 4C-72-B9-B3-A9-10
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter isatap.hsd1.ga.comcast.net.:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : hsd1.ga.comcast.net.
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 12:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft 6to4 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. . . . . . . . . . . : 2001:0:5ef5:79fb:38db:2fe:b39e:dfd4(Prefe
rred)
Link-local IPv6 Address . . . . . : fe80::38db:2fe:b39e:dfd4%17(Preferred)
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled
C:\WINDOWS\system32>

Please help! This is so annoying especially since I game heavily on my computer! :(:(:(:(:(:(