it will depend on whether the microphones power is supplied through that usb cable. You can buy usb female to 3.5mm male adapters on amazon for a couple dollars but since power cant be passed through the 3.5mm to power the mic it likely would not work for you. Those adapters work on a very limited number of devices. If the mic has a seperate power cord then the adapter should work. If it is powered through the usb cable and you could identify which wires in the cable carry the audio you could cut just those and wire them to a cable with a 3.5mm end and leave the other wires connected to usb for power.
Here is a link to the official Dell service and repair manual pdf for your model. Im not positive it has the exact information you need but it appears to cover disassembly and repair very extensively and it has all part numbers and links to order from Dell. https://downloads.dell.com/manuals/all-products/esuprt_laptop/esuprt_alienware_...-15-r2_service%20manual_en-us.pdf
Unfortunately they are not compatible. They are not the same size, they have a different camera layout and there would be nowhere on the iPhone 7 board to connect the Qi charging pad. You can however buy an external Qi receiver that sticks to the back of your phone and connects to the lightning port. It even works under a case as long as its not metal. I found them on ebay for $3, link below. https://www.ebay.com/itm/For-Apple-iPhone-6S-6-SE-5S-Plus-QI-Wireless-Charger-Charging-Receiver-Back-Case/312236764400?hash=item48b2c2ecf0:m:...
The first 2 problems that come to mind are either a failing water pump or failing thermostat. Have you noticed any coolant on the ground after the car has been there running? That would be indicative of a failing water pump.
It could be a number of reasons that it is slowing down. Common problems are file and registry clutter, poor cooling or an old or failing hard drive. As far as clutter I would back up important stuff and do a factory reset. It can do wonders performance wise. Now if it is getting too hot and throttling you will need to pop it open and clean the fans and possibly repaste the heat sink. I couldnt find a teardown guide on here but did locate one at this address https://community.acer.com/en/discussion...-aspire-u5-710-disassembly-guide Lastly, the hdd. A failing drive can cause similar performance issues. You could download a free disk benchmark to test its performance. If it is failing just follow the same teardown guide and replace the hdd. If it doesnt already have a solid state drive, get one. You will see your performance go up by leaps and bounds.
Switch could be bad or poorly connected to the board in a hard to see place or the board could be failing . I have an old Flip with a crack in the lens, otherwise works great that I would be happy to give you for parts if you decide you want to tear into it and try to get it going again.
I was able to find battery replacement parts for them on ebay. It appears that the battery is soldered to the board inside so if you are comfortable soldering you should have no trouble. I couldnt locate a teardown guide on here but youtube has a video doing exactly this. https://www.youtube.com/watch?v=W_scZh_c... the parts on ebay were around $20. Good luck.
Im afraid the answer I have may not be what you were hoping to hear but it sounds like you will need a screen replacement. Unfortunately there are no guides for this repair on this site that I could find but a google search found a couple of youtube videos doing repairs to the stealth. You can buy a new screen on ebay for a few hundred dollars and tackle it yourself or pay Razer $560 to do it. If it isnt very noticeable and the touch screen still works I would personally hold off on the replacement. If you do it yourself be sure to make a guide to post here to help others in the future that run into this problem.
www.shop.partsguru.com seems to have the best selection. Most of the parts are not made by capresso but by 3rd party companies that supplied capresso with parts. Do a google search for capresso infinity parts diagram and you will see many options. Use the diagram to get the part numbers for the parts you need. Ebay also has parts for this model.