Laptop is a Dell Inspiron 1525 with Windows Vista. It says no wireless connection found. Other computers are connected to internet. Says that is switched off. But no buttons were pressed to turn it off. What is the hotkey for turning it on?

to no if you have wireless connection go control panel on your computer then find network and internet look for wireless connection click on it

Dell Inspiron 1525: Unable to Connect Wireless Network

setting up the right option for wireless network connection at Dell 1525. Here's the following:

1. Go to Control panel
2. Select Windows Security Center
3. Select Windows Firewall
4. Click on Change settings
5. Here you might see User Account Control will ask for your permission to continue, simply grant it.
6. Click on the Exception tab at the middle
7. Scroll down to Wireless Portable Devices and check the box next
8. Click Apply, then hit OK
9. After close the program now you can try to connect again and watch the result.
   

With assumption you're already make the wireless enable in BIOS setting. In the device manager you should see what the type of wireless wlan card you used and make sure it's already turned on via your switch on your laptop. If it was, then you need to find out the right wireless device driver for Dell Inspiron 1525. Here's the following:

1. Visit Dell Support site and open the Network tab in the table.
2. Find your wireless device and download the driver for it.
3. Aim to a folder on your computer or any external drive if you have it.

At the Inspiron 1525 laptop

1. go to start
2. Right click at My Computer
3. Click Properties
4. Click Device Manager and Network Adapter .Here you should see a WLAN Mini-Card or might you only see "Unknown Device".
5. Right Click on it and go to properties to select the Update Driver. Now you should browse the folder to select the driver you're already download at the first step.

NOTE:

Just follow the instruction appears completely. After installation the wireless wlan driver at Dell Inspiron 1525 finish, then reboot the machine and know your wireless connection should be works properly.

Please connect your computer directly to your DSL / Cable modem and check if your internet is working fine, if not turn off your modem and restart after a minute or two.

Now check again if the internet is working by directly connecting your laptop to your modem. if it is not working, contact ISP. if it is working, turn on your router and check if your wireless connection is working.

If you wireless connection is still not working, please check if you have plugged the modem to the internet / WAN port behind your router.

Also try logging to your router page (refer to manual for procedure) and try changing the wireless channel.

I presume that Vista has just been installed and connecting wireless. Check if the Wireless switch is on (edge on the right side. IF no change, install the software driver that is on Drivers/Utilities CD that came with your computer. Please comment if the information has been helpful. Thank you and regards.

reboot your router

This generally indicates a lack of connectivity with your network or internet service provider's network, whether it's wired or wireless. Check to make sure you have an established connection to your internet service provider.
Knowing what operating system and your connection status would help to assist you further.

If your wireless router is configured with SSID, encryption, MAC address filtering (if enabled) etc. then the Dell wireless card needs to be configured with these settings to allow it to communicate with the wireless router.
Check the settings on your PC's wireless settings, and configure the Dell the same way.

If your laptop is still under warranty, installing WinXP will void the warranty. It's very tricky. I'd suggest getting another PC with Internet connection and search and download drivers as needed for your 1525. Good luck.

Did you turn off the wireless on your laptop?
Fn + F2 will turn on the wireless.
Let me know if it didnt help.

Go to Dell's website and go to Drivers and find your computer and download the network adapters driver and install it.