Since I built my computer, I know every piece of hardware in it so it's fairly easy. Most of the things that need drivers that are updated are the video card/ integrated video, audio, SATA, USB or other items. Laptop drivers are not updated regularly since most vendors find a driver that is just good enough and leave it at that.
You can find your hardware by going to control panel and then system, then device manager. Like I said, chipset drivers are generally not updated regularly by the manufacturer, even though your chipset might be Intel which updated frequently. The things that matter the most generally are video which would be under display adapters, audio would be under sound, video and game controllers, and usually network adapters are generally updated. After finding the hardware, then you have to go to the manufacturers site and see if the driver you have is older that the driver they have.