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I suggest to reinstall the wireless card driver first ..just in case, this will solve any driver issues and will make it functional in case the driver or the setting are corrupted.. To download the driver in case you do not have it on disk or saved somewhere ..just go to acer.com ...select downloads ...drivers and select the model and operation system you use.. download the wifi driver ..run it again ..and after that restart ..and try to make the connection again ...Check the wireless card in device manager to see if it shows in order ...and did not appear in yellow which indicates driver related issues.. also be sure you have network signal ..and the router is functional ..in case other computer is working with this network ..check to see if the connection actually works .. To redo the connection ..just open the settings for wireless...and click scan for networks ...In the list of available connections ..select yours..and click connect ..insert password if needed. Good luck !
Fot that first you need wi fi router with intenret connection .
Then check in your laptop that your wi fi network adapter driver are installed.
Also check its wi fi switch is turn on it is on laptop.
Check your wireless in router is enabled.
also check your wi fi network adapter is enabled in your LAPTOP.
Let me know if you want to configure your router and if you need more assistanse .
no you cannot replace the built-in wi-fi card...
if you try to change the drivers for atheros wi-fi to Broadcam driver, your wi-fi card will not function anymore.... but you can always install another WI-FI card in your laptop... you can buy a USB Adapter or a Cardbus(PCMCIA) adapter for this purpose...if you want your wi-fi signal strenth and range to be higher, you can opt to buy an adapter which comes under N standard....N standard wi-fi adapters are capable of connecting at a speed of more than 300mbps(practically) to any N standard device like router....
depending upon the manufacturer of the laptop you can go to their websites, from their you can select drivers and downloads and then select the model no of your laptop and then download the drivers you need. If you have any further problems please reply with the model no of your laptop and i will send you the link.
You can download the drivers from Dell WEB site, the support download page. Make sure you select your model laptop, better still type in the Service Tag number, it is printed on the label on the bottom of the laptop. Also make sure you select the Windows XP version of the driver for your Windows operating system. Click on this link :- http://support.dell.com/support/downloads/index.aspx?c=us&l=en&s=gen
if i was you i would load up a version of win xp on another hard drive inserted into your laptop, load the drivers for the laptop including wi fi drivers then see if ok. if not you can be sure its a faulty wi fi card in your laptop,you need to disable internal wi fi card remove,replace it.but first try borrow a pcmcia wi fi card just to check if everythings ok