If you have the USB problem is not detected on your laptop, chances are your laptop must be brought to a laptop service technician, but have it follow the first steps to improve USB device is not detected, most likely your laptop will run normally again and can detect USB devices.

• If the USB device is missing, go to the Device Manager. Under Universal Serial Bus controllers, double-click the USB Root Hub , and when the window opens, click the Power tab. The available ports and power usage are shown.
• Remove the devices and use a powered hub if the displayed power is over 500mA. To check the properties of a hub, double-click HUB and the hub information window will open.
• Remove high-speed USB cables that are over three meters and use high-speed cables that are less than three meters.
• Only use high-speed cables less than three meters with high-speed USB devices (Multifunction devices, scanners, and cameras).
• If the USB device is connected to a USB port on a keyboard, unplug it and plug it into a USB port on the computer or a powered HUB.
• There may be an issue with the USB port. Try plugging into a different USB port. If the USB device displays in Device Manager after plugging the cable into a different port, then uninstall and reinstall the USB device software driver.

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Hi guys,

This guide already well known to the world, but still worth to be shared. :) Let me describe about the issue on the title of this post. "Red X mark on the wireless signal bar on taskbar".

The issue : 

>>>> Occur in windows 7 <<<<

1) When you click on the signal bar, you can see available wireless connection.

2) You can connect to the network you see.(provided that the wireless network not password protected and

    available)

3) The RED X mark suppose to mean that
your Wireless Adapter is DISABLED.

Now you see the issue. Your computer giving you a false icon / falsenotification. It should be a wireless signal with orange X symbol.(If youre not currently connected to any network).

What cause the wrong icon???

1) Some suggested that the icon doesnt belong to the wireless adapter but it belongs to your LAN adapter.

    1.1) Delete other Adapter present in the Change Adapter Setting except LAN adapter and Wireless

           adapter.  Click on the Wireless Signal Bar on your taskbar > Open Network and Sharing Centre > On the left tab, click Change Adapter Setting > Right click on the LAN adapter >

           Disable

    1.2) You need to disable and then enable your LAN adapter.

            Click on the Wireless Signal Bar on your taskbar > Open Network and Sharing Centre >

            On the left tab, click Change Adapter Setting > Right click on the LAN adapter > Disable

If you lucky, step 1 should solve the problem. But if step 1 didnt solve the problem,

2) Go to Device Manager and uninstall your wireless driver but dont delete(dont tick the remove driver

    box) the driver. After uninstall, restart your laptop.  

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