I have had to work with a number of these Stream laptops spanning across multiple models. The guts are different across them but they all have one thing in common: they are pretty underwhelming in the processing power department. HP really designed this lineup to do basic tasks like web browsing, word processing, and streaming some video (although not at super high resolutions). This means that unfortunately 3D applications like Roblox do not run well and some simpler games such as Geometry Dash can still struggle depending on what is running in the background. With some laptops you are able to upgrade them to handle workloads like this better, but on every Stream I have worked on the CPU, RAM, and storage have all been soldered to the motherboard with no upgraded boards available. There is a chance yours may be different and I could confirm this if you gave the exact model number listed on the bottom of the laptop (and in the bios if you can’t read the bottom, they sometimes use hard-to-read colors), but...
That looks like an earpiece speaker bracket from an iPhone 7/8/SE2 to me (same part on all). Often times a new screen will come with this piece pre-installed as @refurbish stated, but on at least the ones we use, the adhesive holding it in during shipping isn’t really all that strong and it can wander out of place. The screw that goes through that metal ring is typically what really holds it in place. If you still have those phones available, I would check and see if one of them is missing that bracket. If you don’t it shouldn’t be too big of a deal, I have tested phones without those before and it doesn’t really seem to harm anything major. Main thing it seems to do is help with noise isolation and prevention of dust entry.
It is possible that this is a sensor issue. I used to have a Toyota van that would disable stability control and traction control if the mass air flow sensor was unhooked, a misfire arose, or if a wheel speed sensor was reading too far out of spec (bad alignment). Best bet would be to get an OBDII code reader (you can find basic ones at places like Walmart for ~$25 and bluetooth ones for a bit more than that online), hook it up, and see what codes come up. You can then look up the code number you get along with your car model on google and should be able to find common causes of the code.
From what I can see on that model the charge port is a separate piece that just plugs into the motherboard so you should be able to replace it with no soldering required, just some screwdrivers and patience. Looking at parts on eBay, they seem to range from $10-$15 including shipping (US pricing).
If you are just looking to replace the rear camera lens, I believe those are the same size and can be swapped, especially because the cameras themselves can be swapped between the two. As for the whole housing, unfortunately Apple made some changes to the SE housing that prevent you putting an iPhone SE inside an 8 housing (and vice versa).
Shadows in the image are typically failing backlight LEDs from my experience. Not the easiest of repairs typically, most involve removing the bare LCD panel, but parts are typically not too expensive. If you decide to do the repair, you are going to want to replace all the LEDs, if one has failed the others may be getting close to failure.
I wouldn’t think so, I would like to imagine that they already spent a good amount of time tweaking the sensor before it went in the iPhone 8 and further tweaking the same platform would be mostly wasted time. My guess is they are just using the A13 chip to provide any improvements. That is just a guess though, will probably have to just wait for someone to swap the sensor into an 8 and see if there are any noticeable improvements.
A little surprised the displays are interchangeable, but not too much. Out of desperation we once put an iPhone 7 display on an iPhone 8 (may have been a plus model, can’t remember) and it actually worked just fine, minus the brackets mounting the assembly into the body of the phone being different.
I wouldn’t think so, I would like to imagine that they already spent a good amount of time tweaking the sensor before it went in the iPhone 8 and further tweaking the same platform would be mostly wasted time. My guess is they are just using the A13 chip to provide any improvements. That is just a guess though, will probably have to just wait for someone to swap the sensor into an 8 and see if there are any noticeable improvements.
A little surprised the displays are interchangeable, but not too much. Out of desperation we once put an iPhone 7 display on an iPhone 8 (may have been a plus model, can’t remember) and it actually worked just fine, minus the brackets mounting the assembly into the body of the phone being different.