Hi, I have just upgraded my laptop (HP Pavillion dv4-1435dx) from Windows Vista 64 bit to Windows 7 64bit, i am experiencing a strange problem, whenever i bootup my system, WLAN works fine .. if i switch the system off and boot again, the WLAN fails to work ( i enable the WLAN through the touch sensitive buttons and when i enable WLAN the buttion color changes from Amber to Blue indicating that the WLAN has been enabled, but in Windows the WLAN icon still has a " X " (cross mark)). I have seen in device manager too, and i guess there are no prob with that as there is no " ! " mark in front of the said device. I have have updated the drivers too.. but i am facing the same prob. This prob i never faces when i had Vista on my system. Kindly let me know the solution to this prob. Thanks SiddharthSid

Hi, Could you access the Internet when seeing the X displayed on the WLAN icon? I know that you have update the network card drivers, but I suggest you also update the Chipset driver. Note: The third-party product discussed here is manufactured by a company that is independent of Microsoft. We make no warranty, implied or otherwise, regarding this product's performance or reliability. After that, you need to verify the relevant service. Verify Network Location Awareness service ========================== 1. Click "Start", type "services.msc" (without quotation marks) in the Search bar and press Enter. 2. Click Continue button to verify the administrator permission. 3. Right click the "Network Location Awareness" service and choose Properties. 4. On General tab click Start. 5. Choose Automatic next to Startup type. 6. Click OK. If it still cannot work, I also suggest you test the issue in Safe Mode with Networking and Clean Boot. If the issue persists, would you please upload the Screenshot of the symptom and the System Information to SkyDrive and provide us the link for analyzing? How to collect a screenshot ======================== 1. Press the Print Screen key (PrtScn) on your keyboard. 2. Click the "Start" menu, type "mspaint" in the Search Bar and Press Enter. 3. In the Paint program, click the "Edit" menu, click "Paste", click the "File" menu, and click "Save". 4. The "Save As" dialogue box will appear. Type a file name in the "File name:" box, for example: "screenshot". 5. Make sure "JPEG (*.JPG;*.JPEG;*.JPE;*.JFIF)" is selected in the "Save as type" box, click Desktop on the left pane and then click "Save". How to collect the System Information ======================== 1. Click Start, type in msinfo32 (without quotation marks) in the Search bar and then press Enter. 2. Choose Save from the File menu and save it as an NFO file. 3. Find the file, right-click on this file, click "Send To", and click "Compressed (zipped) Folder". Arthur Li - MSFT

Hi Arthur, Thanks for the reply. I checked for " Network Location Awareness" service, its "automatic" and is running fine. I performed clean boot, but that too didn't solve my problem. Here is the link to a file in skydrive having screen shots and the .NFO file. Pls do the needful. http://cid-e0e1210902dd0644.skydrive.live.com/browse.aspx/.Public Sid

Hi, I also suggest you check the following settings: Launch Device Manager, under Power Management of your wireless network cards properties, check the Allow the computer to turn off this device to save power box. If it does not work, you may also run System File Checker to check the issue. If both suggestions cannot fix the issue, you may perform an In-Place upgrade to repair the system. In-place Upgrade ============ 1. Start the computer. 2. Insert the Windows 7 DVD in the computer's DVD drive. 3. Use one of the following procedures, as appropriate: a. If Windows automatically detects the DVD, the Install now screen appears. Click Install now. b. If Windows does not automatically detect the DVD, follow these steps: b1. Click Start, click Run, type Drive:\setup.exe, and then click OK. Note Drive is the drive letter of the computer's DVD drive. b2. Click Install now. 4. When you reach the Which type of installation to you want? screen, click Upgrade to upgrade the current operating system to Windows 7. Good luck! Arthur Li - MSFT

Hi Arthur, I tried all the two methods, but without any success. In the first method, u have suggested me to check Power Management of your wireless network cards properties", but in my system, there is no such tab as "power management" for the said device. Sid

I suggest you double check the following steps. 1. Click Start, type devmgmt.msc into Search bar and press Enter. 2. Expend Network adapters and double click your wireless network. 3. Check if the Power Management tab is available? If so, uncheck the Allow the computer to turn off this device to save power box and click OK. If it does not work, whats the result of In-Place upgrade? Arthur Li - MSFT

Hi Arthur, I checked that.. there is no tab as "Power management" under my wifi device, and regarding the upgrade, i have clean formatted my HDD and installed Windows 7.Sid