PLease make sure your wireless is on. if it is not then please make it turn on .then try to connect with your wireless network. if it is still not working then you need to go ahead and update your driver. it will start working fine.
Basically wireless card is inbuilt in laptop but you can add an external wireless card on your laptop. you need to follow this video there or follow this options. 1. Open your laptop and then you need to look at your laptop you will able to see expansion slot there you need to add your new wireless card on it. 2. now you need to run an driver on your laptop. for more information you need to watch this video. How to replace wireless adapter on sony latop.
You need to follow this kind of options for recovering your password. First of all you need to go ahead and open bios and once you will open it then you need to go ahead and now you need to click on advance option. Now you will get an option for recovery you need to click on that then it will recover your operating system.
This problem only comes when booting order is incorrect on your computer. so in this situation, You need to follow these kind of options . 1. Go to BIOS and then select boot option. 2. now you need to click on boot order device or primary boot device. you need to go ahead and then select your hard drive on top boot order and press F10 to save the settings and restart your computer . Finally it will start working fine.
You need to connect an external monitor on your computer and then check are you still getting the same problem . if you are getting the same problem then you need to open your laptop and clean ram and processor fan. Now install the fan and ram back in and then power on your laptop it should work fine now.