Hi sentee, welcome to the forum!
As far as I can tell, you haven't posted anything about the BenQ DW400A except in your post above - unless you have posted under another username.
You can find your own posts, or the posts of another user of the forum, by clicking on the user name and choosing Find more posts by user.
When I look for your posts, I get the results you can see in this link.
You can try to use the forum Search function in the toolbar near the top of the page.