Windows 7 PC unable to identify router/network (wired)

Hi,
I am hoping that someone out there will be able to assist.
Last Friday my main desktop crashed (lost power to the machine) and on restarting the PC was unable to ‘identify’ the network. By identify, I mean, when using “Network and Sharing Centre” on the basic network information page, the PC shows “Identifying” under “active networks” – no matter how long I leave the PC.
PC details
Model: Packard Bell Power x-30
Processor i7 870 @2.93GHz
RAM: 8GB
O/S: Windows 7 Home Premium (64-bit)

Modem Router details
Netgear N300 Wireless Dual Band ADSL2+ Modem Router

The main desktop is connected to the modem router (via Ethernet). The modem router is showing no sign of any problems itself, all the dashboard lights look ok (i.e. power is on, port 1 shows the Ethernet connection in place, both wireless bands are lit, the DSL is lit and so is the internet). The household contains a number of laptops which continue to work ok wirelessly and/or wired through Ethernet. Even mobile phones are accessing the wi-fi ok.
Using the main desktop, I ran ipconfig/all which I supply below.

Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\Alan>ipconfig/all

Windows IP Configuration

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

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 10-78-D2-70-1E-B1
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::4154:39bd:f975:e1d6%11(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.225.214(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.0.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{D422C659-4CEF-49F7-AA96-8AB8BC01DCF2}:

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:

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

The DNS Server address looks ok, as that is the address of the web page to the router. I cannot access that web page (address) via the main desktop, but I can from other devices ok.
Having gone through Device Manager the Realtek PCIe GBE Family Controller is showing as “working properly”.
I have tried pinging the DNS Server address, and that fail
I have gone through a system restore to a previous point (before the day of the crash) but that seems to have made no difference either.


I have attempted to set the IP addresses (for TCP/IPv4) directly
IP address 192.168.0.3
Subnet mask: 255.255.255.0
Default Gateway: 192.168.0.1
And therefore forced to set the DNS Server address too
Preferred DNS server: 192.68.0.1
But I don’t know what to set for the alternate DNS Server, so left blank.
This seems to step me forward, in that the device/network is now identified. However the internet access is still not work, as the "DNS Server is not responding"

Any help or guidance very welcome

Alan