[WordBanter AI]

1. To make a watermark fill an entire page with no border in Microsoft Word:
2. Insert your photo as a watermark by going to the "Design" tab, clicking on "Watermark," and selecting "Custom Watermark."
3. In the "Custom Watermark" window, select "Picture watermark" and click on the "Select Picture" button.
4. Choose the photo you want to use as your background and click "Insert."
5. Make sure the "Washout" option is selected to make the photo appear as a watermark.
6. Click on the "Size" dropdown menu and select "Stretch" to make the photo fill the entire page.
7. Click "OK" to apply the watermark to your document.

To remove the white border caused by forced margins, you can adjust the page margins to match the size of your photo. Here's how:

1. To adjust the page margins:
2. Go to the "Layout" tab and click on "Margins."
3. Select "Custom Margins" at the bottom of the dropdown menu.
4. In the "Page Setup" window, set the top, bottom, left, and right margins to 0.
5. Click "OK" to apply the new margins to your document.

That's it! Your photo should now fill the entire page with no white border.