Help with latest images

Hi can anyone please help me how to show latest images from posts for my photo gallery carousel. currently it’s showing the latest posts images, if possible, i only wanted latest images from posts which have image on it.

please take a look on latest images in the middle of the page, you will see that there’s one post which has no image:
https://www.ezypublishing.com/site1/

this is the code:

<div class="container">
					<ul>
						<?php
						$count =1;
						$gabquery = new WP_Query();$gabquery->query('showposts='.$trns_options["postCountPhotoBar"]);
						while ($gabquery->have_posts()) : $gabquery->the_post();
						?>
						<li class="car">
							<div class="thumb">
								<?php
								gab_media(array(
									'name' => 'mainpage_photogal',
									'enable_video' => '1',
									'enable_thumb' => '1',
									'media_width' => '150',
									'media_height' => '113',
									'thumb_align' => 'alignnone',
									'enable_default' => $trns_options["enthumb_4"],
									'default_name' => 'mainpage_photogal.jpg'
									));
								?>
							</div>