There are several ways to move photos from your iPhone to your computer. This article summarizes them→Transfer photos and videos from your iPhone, iPad, or iPod touch - Apple Support. Note that they are mutually exclusive; if you sync photos to iCloud Photos that is the easiest way, but you then can’t download them with a cable.
So plan A is to enable iCloud Photos on your phone, and install iCloud for Windows on your HP. That way all of your photos will be on both your computer and your phone, and they will sync in near real time - if you take a new photo, it will be on your computer within a few seconds.
Plan B: If you don’t want to do that turn off iCloud photos on your phone, and follow the instructions in the above link. You must do it as described in the link; it won’t work consistently if you try to drag photos from the photo folders on the iPhone, because the photos on the phone are in an indexed database, not entirely within the folder structure.
You should also consider alternative or additional ways of preserving important photos. Here are a few suggestion:
- iCloud backup - only if you don’t use iCloud Sync, they are mutually exclusive
- iTunes backup - only if you don’t use iCloud Sync, they are mutually exclusive
- Transfer your photos to your computer via USB cable
- Apple Photo Stream
- Sync to Google Photos
- Sync to some other photo archiving service such as Shutterfly
- Sync to Dropbox
- Sync to box.com
- Sync to Microsoft OneDrive
- Sync to Amazon Photos
- back up to Livedrive
- Backup to any other backup or archiving service