A:AnswerHi, Andy.
Thank you for sharing your inquiry and I am sorry that you had this experience. Please mail us at https://www.insigniaproducts.com/contact-us so we can send you the screws for your stand.
Alexander G. - Insignia Support
A:AnswerPull up the user manual online. It provides much more detail than the setup guide. You should find the answer there. BTY, I suggest using only HDMI cables (not the combo cables that came with the tv). I got them at Walmart for $7.00. No need to spend any more than that - ALL HDMI cables are the same.
A:AnswerYes it does at least it happens to me too. My son went to brighteness nd controlled that nd it helped when room gets dark TV looks a lil brighter. Hope this helps