These are the basic steps that you need to follow.

Power Drain test for laptop.

If your computer is not having the inbuilt battery follow these steps.

1.  Turn off the laptop.  Unplug all the cables and devices including power cable.

2.  Remove the battery if it is not inbuilt.

3.  Hold the power button for 50 seconds.

4.  Connect all the cables back

5.  Turn on the computer.

Steps to remove the battery.

1.  Turn off the computer.   Remove all the cables and devices including power cable

2.  Turn the laptop upside down.  Flip the laptop.  On the back of laptop there will be a unlock switch.  You need to move the switch to the left or right and then you need to pull the battery door out.  

If your computer is having an inbuilt battery follow these steps.

Power Drain test.

1.  Turn off the laptop.  Unplug all the cables and devices including power cable.

Flip the laptop.  On the back of the laptop there will be a tiny hole.  It is called a battery reset hole.  There will be a battery symbol right next to the hole.

2. You need to insert a paper clip or small pin gently inside the hole and hold it for    30 seconds. 

3. Plug all the cables back and turn on the computer.

Step 2

Bios Defaults.

1. Turn on the computer and keep on tapping f2.  It will go to bios setup utility

2. Press f9 once on the bios setup screen.   It will show you bios defaults.  Please press yes.

3. Press f10 on the bios setup screen.  It will show you "yes" to save the changes.  Please press yes.

Computer will automatically restart and it will load windows..

Step 3

Please try fn + f2,  or Fn + f3 to turn on the wifi.   ( On some models f2 is designed for wireless and for some models f3 is designed for wireless.   You can see the wireless symbol on the key f2 or f3.  Based on the symbol on the function key you can either press and hold the fn and then press f2 or f3 only once to turn on and off the wireless.  It is toggle key to turn on and off the wireless.

Step 4

Press and hold the windows key and press r

on the run window - type ncpa.cpl

You can see icons like ethernet, bluetooth and wifi

Please right click on wifi - connect

It will show you the list of wifi networks

Click on the network which is provided to you by the internet service provider

Please type the security key

It will get connected

Try to go online

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