The CompTIA exams will challenge you on rather advanced troubleshooting. From driver configuration to opening a monitor—this is critical information for techs.
- Yes, friends, once again, the great Mikestrami is now going to take on the CompTIA troubleshooting questions and answer them one by one. Now keep in mind, as we've been going through a lot of these episodes, we've already covered all this stuff, but I want to make sure we're going to get 'em all, so bring 'em on, CompTIA! What do you got first here? Overheat shutdown, hmm. Okay, I think what we're talking about here is that is my video card gets hot and it starts shutting down. That does happen. Especially high-end video cards require proper cooling. Now, video cards are going to come with their own cooling built in, and they also monitor themselves. They turn on and off on themselves, so that might mean I've got bad fans on my video card. The other thing it might mean is that I've got that video card packed in too tight, and he's not getting enough ventilation, so I'll try to move him around to make sure he gets enough air. Bring on the next one! What do you got? Dead pixels, well, dead pixels just happen on LCD monitors. It's a part of the game. As a matter of fact, if you actually read the manufacturer's information, they will say that there's a certain number of dead pixels that they will allow, and you just have to put up with it. Now, I will also tell you this. Dead pixels, especially ones that are towards the center of the screen, you don't have to put up with those. So if you've got this pixel that's always off, always black, or worse yet, you have a pixel that's always bright white on, in that case, usually, you're just going to have to go back to the manufacturer or the store you bought it and get yourself a new one. There ain't no fixin' that kind of stuff. Okay, artifacts. Hmm, artifacts, okay. Artifacts are where pieces of stuff show up on the screen that look like they may have belonged there earlier, but they don't belong there anymore. So it's not just like nothing. It's like a picture of a character that was there, you know, half a second ago, that type of thing. The first thing you're going to be taking a look at with artifacts is your video RAM itself. Video RAM does go bad. Unfortunately, there's no real way to test video RAM. You do what I do. You keep an extra video card around. Run the same thing, and if it's working, you can pretty much blame the graphics card's RAM itself, and there is no replacement. They're pretty much all soldered on. Okay, incorrect color patterns. Okay, well, basically, it's not, you can see the screen. Everything's there that's supposed to be, but the colors are looking weird. Number one, check your cable, especially if it's an old VGA cable. They were notorious if you're not quite all the way plugged in. Then all of a sudden, you'd get some strange colors. The other thing to look at, again, is video RAM, and there's no testing the video RAM. Just snap in another video card and see if it works okay. Dim image. All right, so a dim image just means that somebody who's making light isn't making enough light. This was a big problem on older CCFL LCD panels because those CCFLs would begin to fade down, and all of a sudden, you didn't see a lot of image, and actually, if you have the wherewithal, all of these parts are replaceable. Go on eBay, you can buy new CCFLs and fix any monitor you want, although it does take a little work. Also, don't get caught with that silly thing and just forget to turn the brightness back up. Yep, that happens. All right, flickering image. Again, I'm going to go straight to the cable on that one. Cables are notorious for a flickering image, especially like HDMI cables that really aren't designed to plugged in and out a lot. They can get a little wonky on you, and just try to reseat them and cross your fingers you didn't tear up your HDMI cable. Distorted image, hmm. Okay, now that could mean a couple of things. Number one, with distorted image, is make sure that you're running at the native resolution of your monitor. A monitor that's not running at its native resolution is going to look weird and distorted and fuzzy. That's the first thing you're going to want to check. Also, if we're talking about projectors, this happens all the time, and that's just a matter of adjusting your geometry a little bit. Come on, I'm on a roll! Bring 'em! All right, burn-in. Okay, first of all, CompTIA, burn-in hardly happens anymore. Why do you still have things like this? Anyway, on old school type technology called plasma monitors, you could get burn-in. Basically, you would have a fixed image on a screen, and you left it there for a while, and you would get this burn-in, and there were all these technologies to fix it. With LCDs, which is so overwhelmingly dominant, it doesn't even count anymore, you can get a burn-in, but they don't even call it burn-in. They call it persistence, and the way to get rid of it is to just put some different screens on there, change it to something, and it will go away on its own pretty quickly. All right, last one, what do you got for me? Oversized images and icons. Well, that's an easy one. What we're talking about here is Windows, and what's actually funnier, it's not oversized. The bigger problem we have here is undersized, especially if you go to like, to a big 4K monitor. All of a sudden, your icons and your text look like little tiny ants on the screen. Windows has a very simple tool that allows you to adjust your text size so it'll bring it back up to something you can use. Okay, the great Mikestrami is done, and good luck on the exams. (mellow folk music)
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