When you try to connect to internet it sometimes makes other times it doesn't.

Sporadic internet connection

My friend has a very annoying problem with the PC! When you try to connect to internet it sometimes makes other times it doesn't.
The desktop pc is connected to the router/modem (D-Link WIFI ADSL 2 + G6242) via the ethernet cable, it communicates with the router, but
not between the router and the net!
I can connect without problems with laptop wireless, which indicates that the problem is with the Office
and not the router!
I suspect that the Office might be infected with malicious software. I've updated all the thing and run Malwarebytes, Spybot
Search and destroy and Avast AV, nothing malicious is reported.
I have restored to previous restore points, but the problem persists. It may be a corrupt file but which!
I would have preferred to resolve this problem, otherwise I'll have to do a restore of the system Dell Factory!
I'd love to help with this problem appreciate.

Specifications of the PC;
PC is connected to the router/modem (D-Link WIFI ADSL 2 + G624T)
REB PC
Computer:
Computer Type ACPI (Mobile) 86 x PC
Operating system Microsoft Windows Vista Home Premium 6.0.6002 (Vista RTM)
Date: 2010-04-26
Time 16:19
 
OS Service Pack Service Pack 2
Internet Explorer 8.0.6001.18904
DirectX DirectX 11.0
Motherboard:
CPU type DualCore AMD Athlon 64 X 2, 2600 MHz (13 x 200) 5000 +.
Card mother name Dell Inspiron 531
Motherboard chipset nVIDIA nForce 6100-4xx, AMD Hammer
Memory 2048 MB (DDR2 - 667 DDR2 SDRAM) system
DIMM3: Hynix HYMP112U64CP8-Y5 1 GB DDR2-667 DDR2 SDRAM
DIMM4: Hynix HYMP112U64CP8-Y5 1 GB DDR2-667 DDR2 SDRAM
Type of Award BIOS (09/11/07)
  
Display:
NVIDIA GeForce 8300 GS (128 MB) video card
NVIDIA GeForce 8300 GS (128 MB) video card
Accelerator 3D nVIDIA GeForce 8300 GS
Monitor Dell E207WFP (digital) [20 "LCD] (YM30682B6CFL)
  
Multimedia:
Audio adapter Realtek ALC888/1200 @ nVIDIA nForce 6100-400/405/420/430 (MCP61) - High Definition Audio Controller
  
Storage:
IDE controller NVIDIA MCP61 Serial ATA Controller
IDE controller Standard dual channel PCI IDE Controller
Storage controller Microsoft iSCSI Initiator
Hard drive WDC WD50 00AAKS-75YGA SCSI Disk Device (465 GB)
PBDS DVD +-RW DH - 16W1S SCSI CdRom Device optical drive

Network:
Main IP 192.168.1.2
Primary MAC address
Network card NVIDIA nForce Networking Controller)
  
 
DMI:
DMI BIOS vendor Dell Inc.
DMI BIOS Version 1.0.7
DMI system manufacturer Dell Inc.
DMI system product Inspiron 531
The system DMI 00 version
DMI system number 5NNFJ3J
DMI system UUID 44454C4C-4E00104E-8046B5C0-4F4A334A
DMI Motherboard manufacturer Dell Inc.
DMI Motherboard product 0RY206
[NVIDIA nForce Networking Controller]
  
Properties of the network adapter:
Network card NVIDIA nForce Networking Controller
Interface Type Ethernet
Hardware address
Connection connection to the Local network name
100 Mbps connection
MTU 1500 bytes
DHCP lease obtained 26/04/2010 16:01:26
DHCP lease expires 26/04/2010 17:01:26
Bytes received 3931673 (3.7 MB)
Bytes sent 279120 (272.6 KB)
  
Network adapter addresses:
IP / subnet mask
Entry door
DHCP
DNS
  
Manufacturer of the network adapter:
Company name NVIDIA Corporation
Product information http://www.nvidia.com/page/mobo.html 
Download driver http://www.nvidia.com/content/drivers/drivers.asp 
Update drivers http://driveragent.com?ref=59

That's what shows in ipconfig/all, when it does not connect to the internet.
Although I can connect with laptop computer when this happens on the desktop!

Microsoft Windows [Version 6.0.6002]

Copyright (c) 2006 Microsoft Corporation. All rights reserved.

C:\Users\>ipconfig/all

Windows IP configuration

Name of the host...:-PC
  
Primary Dns suffix...:
  
Node... type: hybrid
  
Active... IP routing: No.
  
Active... proxy WINS: No.

Ethernet connection to the Local network card:

The connection-specific DNS suffix. :
  
... Description: NVIDIA nForce Networking Controller
  
Physical address.... : (I have hidden for security)
DHCP active...: Yes
  
Autoconfiguration enabled...: Yes
  
Autoconfiguration IPv4 address. . : 169.254.163.97 (Preferred)
  
... Subnet mask: 255.255.0.0.
  
... Default gateway. : 0.0.0.0.
  
NetBIOS over TCP/IP...: enabled

C:\Users\ >

Of course, it does not show what it should show such as;

Lease obtained...:
Expiry of the lease...:
... Default gateway. :
DHCP server...:
I tried to reset with the following commands unsuccessfully;

Start, all Programs\Accessories and right click on command prompt, select "run as administrator" to open a command prompt.

In the command prompt window, type the following commands, each followed by the Enter key:

Reset the battery TCP/IP IPv4 default installation. netsh int ipv4 reset reset.log

Reset the battery TCP/IP IPv6 default installation. netsh int ipv6 reset reset.log

Reboot the computer.

Microsoft Windows [Version 6.0.6002]

Copyright (c) 2006 Microsoft Corporation. All rights reserved.

C:\Users\Stebex>ipconfig/all

Windows IP configuration

Name of the host...: Stebex-PC
  
Primary Dns suffix...:
  
Node... type: hybrid
  
Active... IP routing: No.
  
Active... proxy WINS: No.

Ethernet connection to the Local network card:

The connection-specific DNS suffix. :
  
... Description: NVIDIA nForce Networking Controller
  
Physical address.... : 00-1A-A0-80-67-76
  
DHCP active...: Yes
  
Autoconfiguration enabled...: Yes
  
Autoconfiguration IPv4 address. . : 169.254.163.97 (Preferred)
  
... Subnet mask: 255.255.0.0.
  
... Default gateway. : 0.0.0.0.
  
NetBIOS over TCP/IP...: enabled

C:\Users\ >
Would appreciate help please!

Problem solved by a relocation complete!

Tags: Windows

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