Second hand laptop windows 7 won't enable Wi-Fi

[odexut]

Hp G61 notebook pc   64 bit  os.   AMD  Semppron M120  2.10 GHz. Porcessor 

[Venom21]

First, on your phone, turn on mobile data for internet access. Connect the original USB cable from phone to HP laptop, then enable USB tethering in phone settings (Android: Settings > Network & Internet > Hotspot & tethering; iPhone: Settings > Personal Hotspot). Windows should detect it as a new Ethernet connection automatically. Now run windows update and its optional updates and it may install all required drivers including wifi. 

[Paul_Tikkanen]

@odexut 

Since you are running W7 on the notebook, it is highly unlikely that Windows update will install any drivers for the wifi adapter.

While I agree that the first thing to assume is that it is a driver issue, there could be other possibilities such as the Wi-Fi adapter is no good.

There was one model used (I believe a Ralink RT5390) which used to get very hot and burn out.

If it is a driver issue, when the Wi-Fi adapter needs a driver, there will be a device in the device manager labeled as a Network Controller.

If you see a device with that description in the device manager, post the hardware ID for it so I can post the link to the W7 driver it needs.

Use this guide for how to find the hardware ID for a device:

How to Find Drivers for Unknown Devices in the Device Manager