I've a HP G42 laptop. Normally I use Internet using WiFi. It has a Broadcom 802.11n network adapter.
Today I was browsing and suddenly my PC restarted, after that I tried to turn on WiFi but it won't turn on.
The wireless switch key(F12) works well (turns orange when wireless is off and white when it's on). But within Windows 10, it's always off.
I've tried switching it from Win10 settings app, but the WiFi switch elastically falls back to off state every time I click it.
I've tried updating my Broadcom driver which I downloaded in my phone (yes, Wifi works on other devices) but no change.
Diagnosing & troubleshooting says that to turn on WiFi but how can I start a thing which is broken itself? Tried dual-booting Win7 from another drive but the case is exactly same.
Maybe it's a hardware issue, but I'm not sure.
43 Answers
Check that there is no hardware WiFi switch (like a sliding button on the edge of the laptop, or a press button) that you would have touched accidentally.
Try accessing your BIOS when starting the computer, and check in it that the WLAN (WiFi) is turned on.
In Windows 7: Start > Computer (right click) > Manage > Device Manager > Network cards. If the driver is installed, your wireless card should be listed here. (The procedure should not be much different in Windows 10.)
In control panel go to device manager . Uninstall the wireless device DO NOT click "delete driver software for this device". Restart the PC then go back to device manager in click file then click scan for hardware changes this should resolve your issue
this one is an old post but may be useful my answer for another one...if you have some hardware knowledge find the WiFi card and remove it and start your machine.shutdown again and refit the card. start the machine and check the result...
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