Default Gateway unavailable error constant - Urgent

[Dragice]

I have had a PCS laptop for about 5-6 months now, and it's worked perfectly well up until about 2 days ago. There was a Windows 7 update and suddenly I lose connection to the internet randomly, sometimes as often as twice a minute. I have tried a large variety of online suggestions, such as make sure my adapter can't be turned off, rebooted several times, unistalled norton, reinstalled norton, changed adapter settings several times, moved my laptop... etc.
This is very frustrating as I am in college and have work due tomorrow, that I haven't been able to get done because this keeps happening. My laptop is the only device this is happening on, other computers, tablets, and phones have no problems.
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

ipconfig /all :

Windows IP Configuration

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

Wireless LAN adapter Wireless Network Connection 3:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter #
2
Physical Address. . . . . . . . . : 68-17-29-3E-1E-F4
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
Physical Address. . . . . . . . . : 68-17-29-3E-1E-F4
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) Centrino(R) Wireless-N 2230
Physical Address. . . . . . . . . : 68-17-29-3E-1E-F3
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::2c1a:835c:94db:5b72%21(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.0.26(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 23 February 2014 13:04:50
Lease Expires . . . . . . . . . . : 24 February 2014 13:16:46
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DHCPv6 IAID . . . . . . . . . . . : 208148265
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-19-CA-49-1D-00-90-F5-E8-74-F3

DNS Servers . . . . . . . . . . . : 89.101.160.5
89.101.160.4
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 00-90-F5-E8-74-F3
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter VirtualBox Host-Only Network:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VirtualBox Host-Only Ethernet Adapter
Physical Address. . . . . . . . . : 08-00-27-00-A8-E3
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::f8ac:3f0:2cdf:6d8b%17(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.56.1(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 671612967
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-19-CA-49-1D-00-90-F5-E8-74-F3

DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{572E9FAE-1031-4325-96B3-11466009A649}:

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 isatap.{33DAB92A-F22C-45B3-AEB2-45133421139D}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{9187630B-E00C-4E9D-A7B6-D012CFD8BAFD}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #4
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Media State . . . . . . . . . . . : Media disconnected
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

Tunnel adapter isatap.{0318DA08-1FEB-4E11-86B8-9245B016F27F}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #5
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

 

[Slawek]

Check wich updates was installed and uninstall them one by one and test.
You can also try disabling ipv6, just uncheck the "internet protocol version 6" in properties for your network card.

Good luck!

 

[ubuysa]

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) Centrino(R) Wireless-N 2230
Physical Address. . . . . . . . . : 68-17-29-3E-1E-F3
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::2c1a:835c:94db:5b72%21(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.0.26(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 23 February 2014 13:04:50
Lease Expires . . . . . . . . . . : 24 February 2014 13:16:46
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DHCPv6 IAID . . . . . . . . . . . : 208148265
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-19-CA-49-1D-00-90-F5-E8-74-F3

DNS Servers . . . . . . . . . . . : 89.101.160.5
89.101.160.4
NetBIOS over Tcpip. . . . . . . . : Enabled

This is the entry for your wifi adapter and I see you're using an Intel card. These are notorious for dropouts and unreliable connections although I don't recall seeing the 2230 as one of the problem ones. But be aware it might be an issue with the wifi card.

I don't know how much you know about IP networking but the Default Gateway is the router your laptop sends packets to in order to get out to the Internet (in the very early days of the Internet what we now call routers were called gateways). In your case the IP address appears to be (auto) configured correctly so as long as you can ping your router (enter "ping 192.168.0.1" as a command at the command prompt but without the quotes) then you should be able to talk to the Internet. I notice that you've hard-coded DNS servers, these are live (I can ping them) but I wonder why you've done that? Did your ISP tell you to do that? Typically the default DNS server is your router with most home setups (192.168.0.1) so you might try clicking the "obtain DNS server automatically" box.

If that doesn't work, or if you can't ping your router, you may have a hardware issue with the card I think.

Oh, with issues like this it's always worth rebooting the router to see whether that helps. BTW, you haven't made any config changes in the router recently have you?

Edit: If you think it happened after a Windows Update then try restoring to the restore point that was taken at the time?

 

[Dragice]

Sorry for the late reply, I've been extremely busy the last while and have been using my laptop less so this kind of drifted. I was able to ping perfectly, 0% loss and time of 20ms. I didn't set up the router myself, family did, and I'm not familiar with DNS so I'm not certain how to fix that. Oh, and it turns out not to be update related, so I think it may be hardware.

 

[ubuysa]

Sorry for the late reply, I've been extremely busy the last while and have been using my laptop less so this kind of drifted. I was able to ping perfectly, 0% loss and time of 20ms. I didn't set up the router myself, family did, and I'm not familiar with DNS so I'm not certain how to fix that. Oh, and it turns out not to be update related, so I think it may be hardware.

As I mentioned there are lots of issues with Intel wifi cards and dropouts like you mention seems to be the main problem. So it could indeed be hardware.

I would however check with whoever setup the router that the DNS addresses you have hard-coded (89.101.160.5 and 89.101.160.4) are the ones you should be using. Typically DNS addresses are determined dynamically in the same way the IP address is determined.

To change to dynamic DNS addressing you should do the following:

1. Open the Network and Sharing Centre

2. Click the Change Adapter Settings menu entry on the left.

3. On the window that opens, right-click on the icon for your wifi card and select Properties.

4. Scroll down the list you'll see until you find the Internet Protocol v4 (TCP/IPv4) entry. Click it to highlight it and then click the Properties button.

5. On the window that opens ensure the radio button to Obtain DNS server address automatically is checked. The top radio button to Obtain an IP address automatically will probably already be selected, if not select it.

 

[Dragice]

I tried that, and the automatic options are the ones that were already selected. I'm not sure what's going on there. I can also confirm it's not happening on just the one network, I tried a different one the other day. I'm probably gonna end up taking it in for repairs to see what's up.

 

[ubuysa]

I tried that, and the automatic options are the ones that were already selected. I'm not sure what's going on there. I can also confirm it's not happening on just the one network, I tried a different one the other day. I'm probably gonna end up taking it in for repairs to see what's up.

Then those DNS server addresses must be coded in the router and being delivered to your laptop by DHCP. I have no idea why that might be, I don't recognise them (they're not OpenDNS for example).

I think you'd best give PCS a call. I think you'll find that if you take it to a third party to be repaired you will void your warranty.