How to find all drivers at the same time??. ...If you are using Microsoft windows operating system finding drivers is a real problem after format your computer. ....
But there are too many ways to find windows os drivers. I am going to show you methods to find all drivers for windows. 
The first METHOD -Recommended method is by downloading to the official website of your computer based on your computer type. Example if you have an HP computer then search on google hp support and download, and then the first page you will show to select your computer or notebook type,
There are 3 methods to find your computer type
1- By putting your computer model example HP pavilion dv6
2- By putting your computer serial number, you will find on back on you PC, or you can download a software to find it for you.
3 - Third method is by putting your motherboard serial or type if you are using pc.
After choosing your model computer you will show a photo of your computer and then you have to select your OS operating system, example windows 10 professional - 64 bit, be careful to select proper os, you will have problems with your drivers.
If you have added a new device to your computer example a new NVIDIA Graphic card or a new network card, or a new sound card then you have to, go to the offcial website of your product and to find an official driver, based on your device type, check number or serial on your device before.
GO TO DRPSU WEBSITE CLICK HERE
SECOND METHOD - This is a really simple method by using Driver Pack Solution. Search to the google DRPSU and you will show driver pack solution, there are some ways to download drivers, the first is by downloading online, second si by download driver pack solution full software and another is by find it missing driver by driver ID.