screen issue

I bought this Lenovo Legion 7i around 6 months ago and recently I'm seeing this sort of pixelated effect across the top edge of the screen. View: https://imgur.com/AY2Zy2K It's more pronounced when observed on a blue background like in the above image. So I did a quick pixel test and found...

Hello, I want to buy a secondhand notebook and now I found one, but there's a problem with screen. It does a big purple lines. When you press a place upon the keyboard the lines dissapear. The seller thinks it could be a cable to monitor. What do you think? Any suggestions? It's Dell Latitude...

I have been about 1 year and a half with a 6300 fx, I always heard that it is obligatory to overclock it so it can perform at the best, but I never paid attention to that, I do not like to overclock the components, I do not like the high temperatures , I always like to have everything fresh, so...

So I've recently upgraded my pre-built Acer Veriton M275 PC bit by bit but ultimately I'm going to end up with a new one and I could use some help with picking a case and a cpu cooler! (although I'm not sure if it's needed). It's for all-around use, with gaming a little more than office work and...