Windows 7: Wireless help! Dell Inspiron 1545

Hey all!
I have a fairly new Dell Inspirson 1545 and until now it was working fine. My wireless internet is now not working. It finds the network fine but then says that it cannot connect. It also will not troubleshoot. The adapter is on correctly and I know it is not the wireless router because other laptops in the house are using the same wireless. When hooked up wired through an Ethernet cable it works fine...
Anyone know what's up?

Make sure that you have not inadvertantly turned off the wireless switch. You can also disable TCP/IPv6 in your adapter properies.

And if i disable that? what will that do? fix it?

The first thing I would do is go into Device Manager, expand Network Adapters, right click on the Wireless adapter then select Uninstall. If asked, do not allow it to delete the drivers, you just want to delete the entry for the wireless device.

Reboot, Win 7 will rediscover the wireless device and reload the drivers. See if that helps, often does.

Ztruker-
Any other suggestions? That didnt work....

I would try a System Restore to before this problem started happening.

How to Do a System Restore in Windows 7

I've tried that...

Click on Start then Run and paste the following into the Run box, exactly as show, including double quotes:

cmd /c "ipconfig /all > postme.txt & ping yahoo.com >> postme.txt & notepad postme.txt & del postme.txt"

and press ENTER.

A file will open in Notepad. Please copy and paste the contents here. Close the Notepad window and the file will be deleted and the Command Prompt window will also close.

Windows IP Configuration

Host Name . . . . . . . . . . . . : SarahSteinmeyer
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Dell Wireless 1397 WLAN Mini-Card
Physical Address. . . . . . . . . : 78-E4-00-29-E0-72
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Marvell Yukon 88E8040 PCI-E Fast Ethernet Controller
Physical Address. . . . . . . . . : A4-BA-DB-C3-14-43
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{0CA928DB-84F1-4CE2-AC6C-D41177ACB551}:

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 isatap.{2F874B91-9335-442B-9256-8E75D999E632}:

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 Teredo Tunneling Pseudo-Interface:

Media State . . . . . . . . . . . : Media disconnected
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
Ping request could not find host yahoo.com. Please check the name and try again.

You have no connection to your wireless adapter at all. Please post a screen capture of your Device Manager window: A Preferred Method of Uploading/Posting Screen Shots

Also, please double/triple check to make sure the switch to enable your wireless is on.