How do you put photos from an SD memory card once you slide it into an HP Pavilion laptop?
Please use baby steps. I have no idea what I am doing. The laptop has Windows.
Once you insert the SD card into the slot, another option on the pop-up window (it should have the caption "Auto-Play") would be "Copy pictures to a folder on my computer." The import wizard should guide you from there.
More instructions from Microsoft: http://windows.microsoft.com/en-us/windows-xp/help/digitalphotography/download-pictures-from-digital-camera
Instructions from WikiHow (replace "plugging in the USB cable" with "inserting the card"; both sequences are otherwise the same.): http://www.wikihow.com/Transfer-Digital-Photos-from-Your-Digital-Camera-to-Your-Computer
Is the SD card from a camera, phone, tablet? If so, once you place the SD card into the computer, a pop-up window should come up asking what you want to do, one option being browse the contents of the disk. Select this option, and in the new window, look through the contents and double-click on the DCIM or photos folder. If there is another folder after double-clicking the DCIM or photos folder, double-click on that folder. Do this until you find the pictures, usually named with numbers that correspond to the date or DSC, or something similar. Double-click one these files to make sure they are the pictures you want. Exit the picture viewer and go back to the file browser window showing the list of pictures.
If you want to copy all of the files, single-click one of the files, press CTRL and A on the keyboard, right click on the blue selected files and click on Copy in the context menu. On the left of the window, next to the selected files, there should be a list of folders such as Documents and Pictures. Depending on the version of Windows, click on Pictures, or if there isn't a Pictures folder, click on Documents, and then locate and open the Pictures folder. Once in the Picture folder (or any folder you wish to use), you can either crate a new folder and give the folder a name, open the newly created folder, and then press CTRL and V on the keyboard or right-click on a white area within the file browser and click on Paste, or just right-click in a white area of the file browser and click on Paste or press CTRL and V to paste a copy of the pictures into the folder. Remember this location and how to get to the folder (click on Start or the Windows icon on the lower left of the screen and click on Pictures (if that is where you placed the pictures and/or created a new folder).
If the pop-up window for selecting what you wish to do, click on the Start button (Windows logo on the bottom left of the screen), and click on Computer. Once Windows Explorer opens (not Internet Explorer), on the left side of the window scroll and locate the SD card, usually it will have SD card as the name after the letter of the drive associated with the SD card reader, i.e. E: SD. Click on this to open the folders on the SD card, and then follow the instructions above. If you have any further questions, feel free to ask.
P.S. OS stands for Operating System, such as Windows XP, Vista, 7, 8, 8.1, Mac OSX, Ubuntu Linux, Android, Apple iOS, etc.