You'll be better checking your wifi card that comes with your laptop, also make sure you have the most recent driver for it, then go to control panel -> Device Manager -> then expand network adapters -> select and right click your wifi adapter -> click properties -> then select advance options tab -> check this 2 options:
- Roaming Aggressiveness
- Transmit Power
The lower the settings the lower your performance will be, so play with them and see if it fix your problem picking networks and keeping the conection stable