"how do i access my one drive on my desktop from my laptop"
OneDrive is actually online storage, so your OneDrive is on the internet, not your desktop.
Because your OneDrive is on the internet, you can access your OneDrive from any computer, tablet or phone that can connect to the internet.
They key thing to remember is that OneDrive is one of the many features of a Microsoft account, so in order to access your OneDrive on your laptop, you need to know the username and password of your Microsoft account. If you have more than one Microsoft account, you need to know the username and password for the Microsoft account which has the OneDrive you want to access.
Here are the steps:
1- On your laptop, open any web browser.
2- Navigate to https://onedrive.live.com
3- Sign in with the correct username and password.
You are now able to use your OneDrive from your laptop.