we will go over old ground i'm afraid here
1) you have zonealarm, as a virus product do you also have the firewall - make sure you remove all firewalls an use the removal tools - give us a list of what has ever been on the pc and we can give the tools address
2) have you gone to the manufactures website and updated the driver or actually re-installed the driver
3) quite a few things to try below
a) tcp/ip reset
b) ping tests - please do all three - would you post the following tests when the internet is working OK, and then repeat ALL the tests when the internet disconnects.
Make sure you also indicate on the reply which tests are for what condition.
c) Change DNS servers and see if that resolves the issue
d) Uninstall the driver and re-install
e) Post an xirrus screen shot
f) Have you looked into channel interference - the xirrus screen shot will help with that
------------------------------------------------------------------------
TCP/IP stack repair options for use with Vista/Windows 7/Windows 8
For Windows Vista/Windows 7/8
For Windows 8
In the command prompt window that opens, type the following commands:
Note: Type only the text in bold and red for the following commands.
ReStart (reboot) the machine.
If you receive the message
Access is Denied
This often occurs with windows 8
please post back the results in a reply here - its important we know that these commands have worked correctly and not produced any errors
right click in the command prompt box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste
Details also here
http://support.microsoft.com/kb/299357
also the link has a Microsoft Fix it , which will do the above for you
------------------------------------------------------------------------
------------------------------------------------------------------------
Ping Tests
If you cannot access the internet with this PC, then you will need to paste the results into something like notepad and then copy onto a machine that can access the internet and post the results in a reply here.
Save the file to a USB flash drive or other removable media. Plug it into the working computer with internet access and copy the file and paste here.
If you do not have another PC - do you have a phone connected to the internet - can you photograph the result and post the image in a reply
For Windows 8
For windows version, XP, Vista, W7
In the command prompt window that opens
Type the following command
Ping 192.168.1.1
Post back the results in a reply here
right click in the command prompt box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste
Type the following command
Ping google.com
Post back the results in a reply here
right click in the command prompt box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste
Type the following command
Ping 72.52.204.213
Post back the results in a reply here
right click in the command prompt box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste
if you see on the results a
"general Failure"
What firewall / security suite or anti-virus do you currently have on the PC - or you have ever had on the PC in the past - any trial ware - like Norton, kaspersky or Mcafee or any free security suites like zonealarm, AVG , Webroot etc
------------------------------------------------------------------------
------------------------------------------------------------------------
Google public DNS
Note using google public DNS servers from outside the US may actually slow performace - so use the following as a test to identify DNS issues - if these resolve the issues , then we need to investigate further to optimise the use of DNS
Google public DNS
https://developers.google.com/speed/public-dns/
Theres also a link on how to setup those DNS IP address up on a PC
http://code.google.com/speed/public-dns/docs/using.html
Then once you have set up those DNS entries
Flush & register DNS
Hold the Windows key and press R, then type CMD then press Enter to open a command prompt box (A new dialogue box - black with white font, will appear on screen ):
In the command prompt window that opens, type the following commands:
Ipconfig/flushdns
ipconfig/registerdns
If you receive the message
The requested operation requires elevation.
Then please open the command prompt as administrator
Start> All Programs> Accessories and then right click on Command Prompt, select "Run as Administrator" to open a command prompt.
now type the command again
I have found these to be a useful tools to use for DNS testing
https://www.grc.com/dns/benchmark.htm
https://code.google.com/p/namebench/
------------------------------------------------------------------------
------------------------------------------------------------------------
Uninstall and allow windows to re-install the adapter and Driver
goto the device manager > Network Adapters > click on the [+] to show all the adapters
right click on the adapter and from the menu
remove/uninstall the adapter
Now restart the pc and allow windows to detect new hardware and re install the adapter and the driver
------------------------------------------------------------------------
------------------------------------------------------------------------
Run Xirrus Wi-Fi Inspector
Download and install
If you cannot access the internet with this PC, then you will need to copy the program across to the faulty PC
Save the file to a USB flash drive or other removable media. Plug it into the working computer with internet access and copy the file and install the program.
You will now need to take a screen shot and copy that back to the working PC and attach the screen shot in a reply on the forum here.
If you do not have another PC - do you have a phone connected to the internet - can you photograph the result and post the image in a reply
http://www.xirrus.com/Products/Wi-Fi-Inspector.aspx
Download this file "DOWNLOAD WI-FI INSPECTOR Vx.xx "
( the site now appears to require a business email, and does not allow webbased emails like gmail,hotmail or yahoo etc )
There is also a xirrus gadget, But that does not have all the fuctionality "DOWNLOAD GADGET Vx.xx
Use the links below
http://www.pcworld.com/downloads/file_download/fid,77196-order,4/download.html
http://www.softpedia.com/progDownload/Xirrus-Wi-Fi-Monitor-Download-99109.html
Then run and install the program - on a wireless enabled PC/Laptop
if you get an error - You will need to have NET Framework installed for the WiFi Inspector to function.
On windows 8 - (i do not have windows 8) but, it would appear that, When you first try to run, you may get a message that .net framework is needed, and included in that message is a link to download/install.
Run the program
A user guide is available here
http://www.xirrus.com/cdn/pdf/xirruswifiinspectorguide1-2-0
post a screen shot of the program running.
if there are a lot of networks showing can you click on "networks" top lefthand area - so we can see all the network information.
post which SSID name is yours, its located in the list, under network "Adapter Name" (1st column)
Note:
For a reliable (or robust as the Xirrus user guide says) wireless connection you need a signal of about -70 dBm or better. "A desirable signal level for a robust Wi-Fi connection will be green".
note: the signal level is a negative number, so for example -88 is worst and -40 is better
To post a screen shot of the active window.
Windows XP
Hold the Alt key and press the PrtScn key. Open the Windows PAINT application (Start> All Programs> Accessories> Paint) and Paste the screen shot. You can then use PAINT to trim to suit, and save it as a JPG format file.
Vista or Windows 7
you can use the "snipping tool" which is found in Start> All programs> Accessories> Snipping Tool
http://www.bleepingcomputer.com/tutorials/how-to-use-the-windows-snipping-tool/
Windows 8
you can use the snipping tool > Open Snipping Tool (From the Windows 8 Start Screen, type "snip" and press enter.
>Press the Esc. key.
>go back to your Windows 8 start screen - Swipe from left or press Window Button
>Press Ctrl+PrntScr button to use Snipping Tool
see here
http://www.pcadvisor.co.uk/opinion/windows/3415854/how-take-screenshot-in-windows-8/
http://www.pcadvisor.co.uk/how-to/windows/3405830/how-take-screenshot-in-windows-8/
To upload the screen shot to the forum, open the full reply window ("Go Advanced" button) and use the Manage Attachments button to upload it here.
Full details are available here http://library.techguy.org/wiki/TSG_Posting_a_Screenshot
1) you have zonealarm, as a virus product do you also have the firewall - make sure you remove all firewalls an use the removal tools - give us a list of what has ever been on the pc and we can give the tools address
2) have you gone to the manufactures website and updated the driver or actually re-installed the driver
3) quite a few things to try below
a) tcp/ip reset
b) ping tests - please do all three - would you post the following tests when the internet is working OK, and then repeat ALL the tests when the internet disconnects.
Make sure you also indicate on the reply which tests are for what condition.
c) Change DNS servers and see if that resolves the issue
d) Uninstall the driver and re-install
e) Post an xirrus screen shot
f) Have you looked into channel interference - the xirrus screen shot will help with that
------------------------------------------------------------------------
TCP/IP stack repair options for use with Vista/Windows 7/Windows 8
For Windows Vista/Windows 7/8
Start> Programs> Accessories> and right click on Command Prompt, select "Run as Administrator" to open a command prompt box (A new dialogue box - black with white font, will appear on the screen ):
For Windows 8
To open a Cmd Prompt or an Administrator Cmd prompt from the Desktop. Use Win + X and choose Command Prompt or Command Prompt (Admin) from the list.
In the command prompt window that opens, type the following commands:
Note: Type only the text in bold and red for the following commands.
- Reset WINSOCK entries to installation defaults: netsh winsock reset catalog and press enter
- Reset IPv4 TCP/IP stack to installation defaults. netsh int ipv4 reset reset.log and press enter
- Reset IPv6 TCP/IP stack to installation defaults. netsh int ipv6 reset reset.log and press enter
If you receive the message
The requested operation requires elevation.
Then please open the command prompt as administrator - as requested above
Start> Programs> Accessories> and right click on Command Prompt, select "Run as Administrator" to open a command prompt box (A new dialogue box - black with white font, will appear on screen ):
Please note and post back - if you receive the following message :-Then please open the command prompt as administrator - as requested above
Start> Programs> Accessories> and right click on Command Prompt, select "Run as Administrator" to open a command prompt box (A new dialogue box - black with white font, will appear on screen ):
Access is Denied
This often occurs with windows 8
please post back the results in a reply here - its important we know that these commands have worked correctly and not produced any errors
right click in the command prompt box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste
Details also here
http://support.microsoft.com/kb/299357
also the link has a Microsoft Fix it , which will do the above for you
------------------------------------------------------------------------
------------------------------------------------------------------------
Ping Tests
If you cannot access the internet with this PC, then you will need to paste the results into something like notepad and then copy onto a machine that can access the internet and post the results in a reply here.
Save the file to a USB flash drive or other removable media. Plug it into the working computer with internet access and copy the file and paste here.
If you do not have another PC - do you have a phone connected to the internet - can you photograph the result and post the image in a reply
For Windows 8
To open a Cmd Prompt or an Administrator Cmd prompt from the Desktop. Use Win + X and choose Command Prompt or Command Prompt (Admin) from the list.
For windows version, XP, Vista, W7
Hold the Windows key and press R
Now type CMD
then press Enter to open a command prompt box (A new dialogue box - black with white font, will appear on screen ):
Now type CMD
then press Enter to open a command prompt box (A new dialogue box - black with white font, will appear on screen ):
In the command prompt window that opens
Type the following command
Ping 192.168.1.1
Post back the results in a reply here
right click in the command prompt box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste
Type the following command
Ping google.com
Post back the results in a reply here
right click in the command prompt box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste
Type the following command
Ping 72.52.204.213
Post back the results in a reply here
right click in the command prompt box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste
if you see on the results a
"general Failure"
This sometimes means a firewall issue
What firewall / security suite or anti-virus do you currently have on the PC - or you have ever had on the PC in the past - any trial ware - like Norton, kaspersky or Mcafee or any free security suites like zonealarm, AVG , Webroot etc
------------------------------------------------------------------------
------------------------------------------------------------------------
Google public DNS
Note using google public DNS servers from outside the US may actually slow performace - so use the following as a test to identify DNS issues - if these resolve the issues , then we need to investigate further to optimise the use of DNS
Google public DNS
https://developers.google.com/speed/public-dns/
Theres also a link on how to setup those DNS IP address up on a PC
http://code.google.com/speed/public-dns/docs/using.html
Then once you have set up those DNS entries
Flush & register DNS
Hold the Windows key and press R, then type CMD then press Enter to open a command prompt box (A new dialogue box - black with white font, will appear on screen ):
In the command prompt window that opens, type the following commands:
Ipconfig/flushdns
ipconfig/registerdns
If you receive the message
The requested operation requires elevation.
Then please open the command prompt as administrator
Start> All Programs> Accessories and then right click on Command Prompt, select "Run as Administrator" to open a command prompt.
now type the command again
I have found these to be a useful tools to use for DNS testing
https://www.grc.com/dns/benchmark.htm
https://code.google.com/p/namebench/
------------------------------------------------------------------------
------------------------------------------------------------------------
Uninstall and allow windows to re-install the adapter and Driver
goto the device manager > Network Adapters > click on the [+] to show all the adapters
right click on the adapter and from the menu
remove/uninstall the adapter
Now restart the pc and allow windows to detect new hardware and re install the adapter and the driver
------------------------------------------------------------------------
------------------------------------------------------------------------
Run Xirrus Wi-Fi Inspector
Download and install
If you cannot access the internet with this PC, then you will need to copy the program across to the faulty PC
Save the file to a USB flash drive or other removable media. Plug it into the working computer with internet access and copy the file and install the program.
You will now need to take a screen shot and copy that back to the working PC and attach the screen shot in a reply on the forum here.
If you do not have another PC - do you have a phone connected to the internet - can you photograph the result and post the image in a reply
http://www.xirrus.com/Products/Wi-Fi-Inspector.aspx
Download this file "DOWNLOAD WI-FI INSPECTOR Vx.xx "
( the site now appears to require a business email, and does not allow webbased emails like gmail,hotmail or yahoo etc )
There is also a xirrus gadget, But that does not have all the fuctionality "DOWNLOAD GADGET Vx.xx
Use the links below
http://www.pcworld.com/downloads/file_download/fid,77196-order,4/download.html
http://www.softpedia.com/progDownload/Xirrus-Wi-Fi-Monitor-Download-99109.html
Then run and install the program - on a wireless enabled PC/Laptop
if you get an error - You will need to have NET Framework installed for the WiFi Inspector to function.
On windows 8 - (i do not have windows 8) but, it would appear that, When you first try to run, you may get a message that .net framework is needed, and included in that message is a link to download/install.
Run the program
A user guide is available here
http://www.xirrus.com/cdn/pdf/xirruswifiinspectorguide1-2-0
post a screen shot of the program running.
if there are a lot of networks showing can you click on "networks" top lefthand area - so we can see all the network information.
post which SSID name is yours, its located in the list, under network "Adapter Name" (1st column)
Note:
For a reliable (or robust as the Xirrus user guide says) wireless connection you need a signal of about -70 dBm or better. "A desirable signal level for a robust Wi-Fi connection will be green".
note: the signal level is a negative number, so for example -88 is worst and -40 is better
To post a screen shot of the active window.
Windows XP
Hold the Alt key and press the PrtScn key. Open the Windows PAINT application (Start> All Programs> Accessories> Paint) and Paste the screen shot. You can then use PAINT to trim to suit, and save it as a JPG format file.
Vista or Windows 7
you can use the "snipping tool" which is found in Start> All programs> Accessories> Snipping Tool
http://www.bleepingcomputer.com/tutorials/how-to-use-the-windows-snipping-tool/
Windows 8
you can use the snipping tool > Open Snipping Tool (From the Windows 8 Start Screen, type "snip" and press enter.
>Press the Esc. key.
>go back to your Windows 8 start screen - Swipe from left or press Window Button
>Press Ctrl+PrntScr button to use Snipping Tool
see here
http://www.pcadvisor.co.uk/opinion/windows/3415854/how-take-screenshot-in-windows-8/
http://www.pcadvisor.co.uk/how-to/windows/3405830/how-take-screenshot-in-windows-8/
To upload the screen shot to the forum, open the full reply window ("Go Advanced" button) and use the Manage Attachments button to upload it here.
Full details are available here http://library.techguy.org/wiki/TSG_Posting_a_Screenshot
