Network not accessible, network address invalid

I have a total of 4 computers in my house:

Computer A: Desktop computer running windows vista, wired connection to router, HOME workgroup. Can access all computers on the network.

Computer B: Desktop computer running windows xp, wired connection to router, HOME workgroup. Can access all computers on the network.

Computer C: Laptop computer running windows 7, wireless connection to router, HOME workgroup. Can access all computers on the network.

Computer D: Laptop computer running windows 7, wireless connection to router, HOME workgroup. Can ONLY access computer B and C....Computer A shows up but I get an error message while trying to access it....\\pca-pc is not accessible. You might not have permission to use this network resource. contact the administrator of this server to find out if you have access permissions. The network address is invalid.

From Command Prompt Computers A and D

Computer A:

Microsoft Windows [Version 6.0.6002]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.

C:\Users\Christina>nbtstat -n

Local Area Connection:
Node IpAddress: [192.168.1.21] Scope Id: []

NetBIOS Local Name Table

Name Type Status
---------------------------------------------
CHRISTINA-PC <00> UNIQUE Registered
HOME <00> GROUP Registered
CHRISTINA-PC <20> UNIQUE Registered
HOME <1E> GROUP Registered
HOME <1D> UNIQUE Registered
..__MSBROWSE__.<01> GROUP Registered

C:\Users\Christina>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Christina-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : westell.com

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : westell.com
Description . . . . . . . . . . . : Realtek RTL8168C(P)/8111C(P) Family PCI-E
GBE NIC
Physical Address. . . . . . . . . : 00-1F-C6-10-9A-2C
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::3458:c6bc:7f43:745b%10(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.21(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Wednesday, November 23, 2011 7:41:06 AM
Lease Expires . . . . . . . . . . : Thursday, November 24, 2011 7:41:03 AM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 251666374
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-E8-8A-F2-00-1F-C6-10-9A-2C

DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 6:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:3064:1699:cd97:f1f6(Pref
erred)
Link-local IPv6 Address . . . . . : fe80::3064:1699:cd97:f1f6%11(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Local Area Connection* 7:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : westell.com
Description . . . . . . . . . . . : isatap.westell.com
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

C:\Users\Christina>ping Summer-HP

Pinging Summer-HP.westell.com [192.168.1.30] with 32 bytes of data:
Reply from 192.168.1.30: bytes=32 time=2ms TTL=128
Reply from 192.168.1.30: bytes=32 time=1ms TTL=128
Reply from 192.168.1.30: bytes=32 time=1ms TTL=128
Reply from 192.168.1.30: bytes=32 time<1ms TTL=128

Ping statistics for 192.168.1.30:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 2ms, Average = 1ms

C:\Users\Christina>

Computer D:

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\Summer>nbtstat -n

Local Area Connection:
Node IpAddress: [0.0.0.0] Scope Id: []

No names in cache

Local Area Connection 2:
Node IpAddress: [0.0.0.0] Scope Id: []

No names in cache

Wireless Network Connection:
Node IpAddress: [192.168.1.30] Scope Id: []

NetBIOS Local Name Table

Name Type Status
---------------------------------------------
SUMMER-HP <00> UNIQUE Registered
HOME <00> GROUP Registered
SUMMER-HP <20> UNIQUE Registered
HOME <1E> GROUP Registered

Wireless Network Connection 3:
Node IpAddress: [0.0.0.0] Scope Id: []

No names in cache

Wireless Network Connection 2:
Node IpAddress: [0.0.0.0] Scope Id: []

No names in cache

C:\Users\Summer>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Summer-HP
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : westell.com

Ethernet adapter Local Area Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) Centrino(R) WiMAX 6250
Physical Address. . . . . . . . . : 64-D4-DA-1A-C7-15
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection 3:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter #
2
Physical Address. . . . . . . . . : 00-23-15-A0-6C-35
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. . . . . . . . . : 00-23-15-A0-6C-35
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . : westell.com
Description . . . . . . . . . . . : Intel(R) Centrino(R) Advanced-N 6250 AGN
Physical Address. . . . . . . . . : 00-23-15-A0-6C-34
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::ac3f:c208:4cf8:142%12(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.30(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Wednesday, November 23, 2011 7:05:44 PM
Lease Expires . . . . . . . . . . : Thursday, November 24, 2011 7:05:44 PM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 318776085
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-56-F8-D5-78-AC-C0-4D-D4-7C

DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{F7D3EE97-318F-4659-A19B-9494B885068C}:

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 Local Area Connection* 15:

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 isatap.{2BB6B818-FEFF-450C-9A64-D869BE218B96}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.westell.com:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : westell.com
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
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. . . . . . . . . . . : 2001:0:4137:9e76:20d8:2717:cd97:f1f6(Pref
erred)
Link-local IPv6 Address . . . . . : fe80::20d8:2717:cd97:f1f6%16(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

C:\Users\Summer>ping Christina-PC

Pinging Christina-PC.westell.com [192.168.1.21] with 32 bytes of data:
Reply from 192.168.1.21: bytes=32 time=1ms TTL=128
Reply from 192.168.1.21: bytes=32 time=1ms TTL=128
Reply from 192.168.1.21: bytes=32 time=1ms TTL=128
Reply from 192.168.1.21: bytes=32 time=1ms TTL=128

Ping statistics for 192.168.1.21:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 1ms, Maximum = 1ms, Average = 1ms

C:\Users\Summer>

Other Thing I Tried

1. If I got to start run and type in 192.168.1.21 it then pop ups username and password box at which I am able to access the folder and files on computer A but then why doesn't it work the other way?

2. I did a complete system restore on computer D bringing it back to out-of-the-box state. It then worked correctly! Everything was fine. I completely updated the computer via windows update...still everything was fix and working correctly. Then I hadn't used the laptop for 3-4 days and the next time I turned it on...not working again. I changed nothing no new update just all of the sudden not working again.

3. Turned off router, reset router, refreshed router....nothing worked there.

Added Thought

I looked under my windows 7 credentials, would this have anything to do with it?

I really hope to get this fixed, when I initially bought the laptop everything worked fine never had a problem, I did a system restore on computer A and D a short while ago and it seemed that's when I started having problems, I did another system restore on computer A and D thinking it would fix it but it didn't. All computers in my home are fully updated via Windows Update. If you need anymore information please ask. Thanks for reading!
 

My Computer

I have a total of 4 computers in my house:

Computer A: Desktop computer running windows vista, wired connection to router, HOME workgroup. Can access all computers on the network.

Computer B: Desktop computer running windows xp, wired connection to router, HOME workgroup. Can access all computers on the network.

Computer C: Laptop computer running windows 7, wireless connection to router, HOME workgroup. Can access all computers on the network.

Computer D: Laptop computer running windows 7, wireless connection to router, HOME workgroup. Can ONLY access computer B and C....Computer A shows up but I get an error message while trying to access it....\\pca-pc is not accessible. You might not have permission to use this network resource. contact the administrator of this server to find out if you have access permissions. The network address is invalid.

Hi,

Sorry to hear you are having problems but your issue appears to be with Computer D (A Windows seven PC) as Computer C (A Windows seven PC too) can access the Vista PC Computer A.

Therefore to get assistance with this issue, I would recommend, you should ask for assistance on the Seven forum: -

Windows 7 Forums
 

My Computer

System One

  • Manufacturer/Model
    HP-Pavilion m9280.uk-a
    CPU
    2.30 gigahertz AMD Phenom 9600 Quad-Core
    Motherboard
    ASUSTek Computer INC. NARRA3 3.02
    Memory
    3582 Megabytes Usable Installed Memory (4 Gig)
    Graphics Card(s)
    ASUS NVIDIA Geforce GTS450
    Sound Card
    Realtek High Definition 7.1 Audio (HP drivers)
    Monitor(s) Displays
    HP w2408 24.0" (Dual monitor)
    Screen Resolution
    1920 * 1200, 1920 * 1200
    Hard Drives
    3*500 Gigabytes Usable Hard Drive Capacity
    Plus 2x USB (160Gig each) external HDD
    BluRay & DVD Weiters
    HL-DT-ST BD-RE GGW-H20L SCSI CdRom (Bluray RW) Device
    AlViDrv BDDVDROM SCSI CdRom (Blueray) Device
    TSSTcorp CDDVDW TS-H653N SCSI CdRom
    Internet Speed
    40 Meg
You are welcome & good luck.

Paul H.
 

My Computer

System One

  • Manufacturer/Model
    HP-Pavilion m9280.uk-a
    CPU
    2.30 gigahertz AMD Phenom 9600 Quad-Core
    Motherboard
    ASUSTek Computer INC. NARRA3 3.02
    Memory
    3582 Megabytes Usable Installed Memory (4 Gig)
    Graphics Card(s)
    ASUS NVIDIA Geforce GTS450
    Sound Card
    Realtek High Definition 7.1 Audio (HP drivers)
    Monitor(s) Displays
    HP w2408 24.0" (Dual monitor)
    Screen Resolution
    1920 * 1200, 1920 * 1200
    Hard Drives
    3*500 Gigabytes Usable Hard Drive Capacity
    Plus 2x USB (160Gig each) external HDD
    BluRay & DVD Weiters
    HL-DT-ST BD-RE GGW-H20L SCSI CdRom (Bluray RW) Device
    AlViDrv BDDVDROM SCSI CdRom (Blueray) Device
    TSSTcorp CDDVDW TS-H653N SCSI CdRom
    Internet Speed
    40 Meg
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