1. Go to Software&drivers in HP website.
2. Enter the model name of your Laserjet printer in the search box. (As an example, take Laserjet 1022.)
3. There may be several matching products for you to choose. Choose the right one according to your product model.
4. Select the system version to Windows 7.
Then you will be given a list of software to download. Locate the right driver then download it.
The drivers are always in self-installing format. After download completes, just double-click on the downloaded file then follow the on-screen instructions to install the driver.
Besides downloading drivers manually, you can also use a driver update tool to help you. Driver Easy is one of useful driver update tools. You can use it to scan your computer to detect all problem drivers then it will recommend new drivers. With Driver Easy, you can download drivers for your Laserjet printer for Windows 7 with just 2 clicks. Very easy steps to perform. And much time will be saved.
After downloading drivers, if you are not sure how to use Free version to update drivers, refer How to update divers with Driver Easy Free version.