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Your laptop should come with an Ethernet connection as well as wireless connections, try making a wired connection via your Ethernet port, these are usually more reliable than wireless connections.
When I have experienced these sort of problems it is usually because of a missing driver.
Check that you have the proper drivers for your internet connections installed, these should come on a disk that is supplied with your laptop.
Finally check this link for Microsoft's official network trouble shooter. http://windows.microsoft.com/en-gb/windows-vista/troubleshoot-network-connection-problems.
which OS do you have? XP, Vista, 7, etc. you must have a wireless adapter in your PC to use wireless and it must be enabled.
if not wireless, then you must have an ethernet slot with cable(CAT5) inserted from internet modem/router. if you have a laptop then you have wireless available. there is a key on keyboard to turn wireless on. you have to have your Network assigned to the wireless internet provider too. if you have cable(cat5) connected to a modem or router/modem connection, and you see an ethernet icon in your lower right corner window(looks like a little computer display), then you have an ethernet connection. if not then either the cable is bad or the modem/router is not producing a connection to pc. thats alot i know but i have little knowledge about your internet connection on your pc. you have not given that to me to use
Troubleshoot your wireless network with HP mobile and wireless solutions
update (flash) the Bios install all the Nvidia updates (chipset and Video) Audio Modem (only if you use this to access the internet or possibly will in the future - ie on vacation) Hp software updates (Quick Launch and Q/L Critical update) Essential Vista updates (these are the ONLY Microsoft related updates I installed) Finally the Wireless Driver update (in my case the Broadcom W/L Card) and
the little blue light came back !!! Even better was that it turns off
when it's supposed to and back on when it is supposed to. Wireless
Works - I tested by connecting to multiple different networks for
stability (just go to a couple of different MacDonald's, Starbuck's and
Safeway stores to try this if you cannot find available networks in
your neighbourhood) You don't have to connect to them, just get to the
point where it checks for the passcode/network key and you've
successfully communicated with the router and this will count as
connecting to a wireless device. i have TURNED OFF ALL WINDOWS
UPDATES, this is important because it is an update to the operating
system (Windows Vista) that is causing the problems in the first place.
(Not a conspiracy between HP/Compaq and Microsoft to cause you to pay
for expensive parts that don't fix the problem or go out and pay for a
full copy of Windows Vista and have it installed professionally) I
used to work for the retailer that sold me this laptop for my step
daughter (and HP authourized repair centre) and now i work for a
Network and Systems Support HelpDesk so i can safely say that you don't
need to fall for the warning from Microsoft about needing to keep your
operating system constantly updated because if you connect to a
Wireless network in the fireplace you are behind a firewall and thus
protected by the nasty little things floating around out there. If
you are worried about the security concerns about your browser
(internet explorer) the download Firefox - it is built on a much safer
code and is regularily updated as well and won't leave you open to
installing the nasty microsoft code that breaks your laptop
click on to start go to control pannel and in control pannel look for network connection in network connection look for wireless network right click and then click on to enable and the wireless would get enable
Connecting to Router open diagnostic page and check your Wan connection. If you do not find it use from same router the ping or trace command to check your Internet connection. If you cannot get a result check Wan configuration: (PPOE/A Bridge etc) with your ISP (call or read user manual) if your router is on net but you cannot browswe vrom vaio check if router access list is set: disable it or add your PC MAC address.
ok, this is an easy fix, just go into device manager and unistall the wireless card, dissable AVG firewall and activate microsoft's firewall. Then Download CCleaner and clean the registry, you can download it from here: http://www.filehippo.com/download_ccleaner/
when you have cleaned the registry restart the pc, it should now detect the wireless card and install the drivers for it, it will show this in the system tray (bottom righthand side where the time is) This should resolve the problem for you post back if you still have problems