Laptops of the series HP ProBook 4520s, released in the early 2010s, remain reliable work tools in many offices and educational institutions. However, owners of this model often encounter difficulties when trying to connect the device to a wireless network, as the module activation methods differ from modern standards. Unlike newer models, where network management is entirely software-based, physical switches and specific key combinations play a crucial role here.
The problem of no internet connection can be caused by a variety of factors: from a banal function being disabled in the BIOS to the absence of the necessary drivers in the operating system. Hardware button The wireless module enablement button on this model is not readily apparent and is often overlooked by users searching for a solution in the Windows menu. Understanding the device's physical architecture is the first step to a successful connection.
In this article, we'll cover all possible methods for activating Wi-Fi in detail, from checking physical switches to manually installing drivers for older operating systems. If you're faced with a missing network icon or a red cross, following these steps sequentially will help restore the connection.
Physical switches and function keys
The first thing you need to check on your laptop is HP ProBook 4520s, is the state of the hardware switches. HP engineers at the time placed a strong emphasis on security and network access control, so they implemented a separate physical slider to control wireless interfaces. Its location may vary depending on the specific case model, but it is most often located on the front edge of the device.
Look for a small slider with an indicator light on the front edge of your laptop, near the right corner. There's usually an antenna icon or a wireless symbol next to it. If the indicator light is on, amber (orange) color, this means the wireless module is physically disabled. Move the slider to the other position: the indicator should turn blue, indicating power is being supplied to the antenna.
⚠️ Note: If the indicator does not turn blue after moving the slider, the problem may not be with the slider itself, but with a software glitch or missing HP button control driver.
In addition to the physical slider, Wi-Fi control is also available via the keyboard. On the 4520s, this is accomplished with a key combination. Look for the antenna icon on the function key row (F1-F12). In most cases, this is the key F12 or F8, depending on the regional keyboard layout.
To activate the function, press and hold the key Fn, then briefly press the corresponding function key. The screen may flash, and the LED on the key (if present) will change color. If a single press doesn't work, try pressing the key twice, as some BIOS versions require confirmation.
- 📶 Check that the physical slider on the end of the laptop is moved to the "On" position (blue indicator).
- ⌨️ Use the combination
Fn+F12(or the key with the image of an antenna) for software activation. - 👀 Pay attention to the color of the indicator: blue - working, orange - off.
- 🔄 If the indicator is blinking, try restarting the laptop while holding the power button (10 seconds).
Setting up a wireless adapter in Windows
Once you've verified that the physical switches are working properly, you need to move on to the software. The operating system can block the connection even if the hardware is working properly. In Windows 7, which is most commonly installed on HP ProBook 4520s, network connections are managed through the Network and Sharing Center.
Open the Start menu and type the phrase in the search bar. changing adapter settingsSelect the found item. In the window that opens, you'll see a list of all network interfaces. Find the "Wireless Network Connection" icon. If it's grayed out and labeled "Disabled," right-click it and select "Enable."
In more modern OS versions, such as Windows 10, the process may look different, but the logic remains the same. Sometimes the system switches to Airplane mode, which forcibly blocks all radios. Check the notification bar in the lower right corner of the screen: if the airplane icon is active, click it to deactivate it.
⚠️ Note: The network settings interface may vary depending on your Windows version and installed updates. If you don't see the options described, check the official Microsoft documentation for your OS version.
If the adapter appears with a yellow exclamation point in Device Manager, this indicates a resource conflict or missing driver. In this case, simply enabling it in Control Panel won't help—software installation is required. You should also check Windows Services: Win + R, enter services.msc and find the "WLAN AutoConfig" service. It should be running and have the startup type set to "Automatic."
A common error is having multiple connection profiles with the same name but different security settings. The system may attempt to connect to a saved network with an incorrect password. In the list of available networks, right-click your network and select "Forget Network," then try connecting again using the correct credentials.
Installing and updating Wi-Fi drivers
The most common reason for Wi-Fi not working on laptops HP ProBook 4520s is the absence or incorrect operation of drivers. This model was equipped with wireless modules from various manufacturers, such as Atheros, Broadcom or RalinkYou can determine the exact model of your adapter without an installed driver using the hardware identifier (Hardware ID).
To do this, open "Device Manager" (right-click "My Computer" -> "Manage" -> "Device Manager"). Find the "Other devices" or "Network adapters" section. If you see a device with a yellow question mark, right-click it, select "Properties" -> "Details" tab -> select "Hardware IDs" from the drop-down list. Copy the top line, for example: PCI\VEN_168C&DEV_002B&SUBSYS...
This code allows you to accurately determine the chip manufacturer and download the appropriate driver. HP's official website may no longer have drivers for older operating systems, so you often have to use driver archives or universal packages. Drivers for this model often have versions for Windows 7 32-bit or 64-bit; it's important to be careful not to confuse the bit depth of your system.
Where can I find drivers if the HP website is down?
The official HP website may not support older models. In this case, use trusted driver archives, such as DriverPack, or aggregator websites like Driver.ru. Enter the copied Hardware ID into a search engine—this is the most reliable way to find the software you need.
The driver installation process requires a reboot. After the software is installed, the system should recognize the device as a "Wireless Network Adapter." If the device disappears from the Device Manager or returns with error code 10 or 12 after installing the driver, try uninstalling the device completely (right-click -> Uninstall), and then select "Action" -> "Scan for hardware configuration" from the Device Manager menu.
Without it, the function keys may not respond to pressing, even if the Wi-Fi driver itself is installed correctly.
Diagnostics via Device Manager
A thorough diagnosis of the network adapter's status is performed using the standard Windows tool, Device Manager. This interface allows you to see whether the motherboard even recognizes the installed Wi-Fi module. If the adapter is physically functional and enabled using the slider, it should appear in the list without errors.
If there are no unknown devices listed and Wi-Fi isn't working, this may indicate that the module is disabled in the BIOS or has failed. In Device Manager, under the "View" menu, enable "Show hidden devices." If the adapter appears translucent, it means the system "remembers" it but can't currently see it. Try removing it and restarting the laptop.
| Error code | Description of the problem | Recommended action |
|---|---|---|
| Code 10 | The device cannot be started. | Reinstall the driver, check the Wi-Fi slider |
| Code 28 | Drivers not installed | Download and install the driver using Hardware ID |
| Code 43 | Windows has stopped the device | Discharge static electricity (remove battery) |
| Code 12 | Lack of resources | Disable unnecessary devices in BIOS or reinstall the OS |
In the adapter properties, under the "Power Management" tab, make sure "Allow the computer to turn off this device to save power" is unchecked. ProBook 4520s series laptops are known for aggressively conserving battery power, sometimes disabling the Wi-Fi module and not re-enabling it when needed.
☑️ Check in Device Manager
BIOS setup and reset
At the system level, management of wireless modules in HP ProBook 4520s This is done via the BIOS. If software methods don't help, the wireless module may be blocked at the motherboard microcode level. This often happens after resetting the BIOS settings or replacing components.
To enter the BIOS, restart the laptop and actively press the key when turning it on. F10In the BIOS menu, go to the tab System Configuration (System Configuration) or Security (Security). Find the item Built-in Device Options or Wireless Button State. Make sure that the value next to the WLAN or Wireless items is Enable.
Sometimes a full reset of the BIOS settings to factory defaults helps. In the main BIOS menu, select Restore Defaults (Restore to default), confirm the action and select Save and ExitAfter rebooting, check that Wi-Fi is working properly. It's also worth checking your BIOS version: if it's too old, it may not support new encryption standards, and if it's too new for your model, it could be buggy.
⚠️ Caution: Be careful when changing BIOS settings. Incorrect changes may cause your laptop to become unstable. Write down the original values before making any changes.
There's also a static discharge method that often restores Wi-Fi functionality in older HP laptops. Turn off the laptop, unplug the charger, and remove the battery. Press and hold the power button for 30-40 seconds. Then reinsert the battery, plug in the charger, and turn on the device. This method drains residual current from the controllers.
Troubleshooting connection and stability issues
Even if Wi-Fi is enabled, connection stability issues may arise. Laptops from the 2010s often use the standard 802.11n or even 802.11g, which are sensitive to interference. If the connection is constantly dropping, try changing the broadcast channel in your router settings to a less congested one (for example, 1, 6, or 11).
In the Windows wireless adapter properties, on the "Advanced" tab, you can try changing the "802.11n Mode" setting to "Enabled" or, conversely, "Disabled" if you're experiencing compatibility issues. It's also worth checking the security type: for older cards, it's better to use WPA2-Personal (AES), avoiding mixed TKIP/AES modes.
If your laptop sees the network but fails to connect, displaying the error "We can't connect to this network," try deleting the network profile. Go to "Manage Wireless Networks" (in Windows 7), find your network in the list, right-click it, and select "Delete." Then reconnect.
In some cases, unstable performance is caused by overheating of the wireless module, which is located under the keyboard in this model. If the laptop hasn't been dusted in a while, we recommend performing a preventative cleaning of the cooling system, which may also improve the stability of the Wi-Fi signal.
Frequently Asked Questions (FAQ)
Where exactly is the Wi-Fi power button on the HP ProBook 4520s?
The physical switch (slider) is usually located on the front edge of the laptop, on the right side. Additionally, the keyboard has a function key (often F12) with an image of an antenna, which works in conjunction with the Fn button.
Why is the Wi-Fi indicator orange?
An orange light indicates that the wireless module is disabled. This can be done via software (via the keyboard) or hardware (via a switch on the case). Move the slider or press Fn+F12 to turn the light blue.
What drivers are needed for Wi-Fi on the HP ProBook 4520s?
The model was equipped with Atheros, Broadcom, or Ralink modules. The exact driver is determined by the device's Hardware ID in Device Manager. Universal drivers are often suitable for Windows 10, but for Windows 7, it's best to look for genuine HP versions.
Is it possible to replace the Wi-Fi module with a more powerful one?
Yes, this model uses a standard Mini PCIe slot. However, the HP BIOS may block the installation of unlicensed modules (not on the HP whitelist). It's best to look for modules with HP codes (e.g., 593836-001) or use a USB adapter.
What should I do if Wi-Fi is lost after reinstalling Windows?
Most likely, the chipset and wireless adapter drivers are not installed. Use another computer to download the drivers from the HP support website, or use a driver package (Snappy Driver Installer or similar) and transfer them to your laptop via USB.