Online teaching laptop replacement

I am a teacher. I teach underprivileged middle school students in Durham, and students in wake county trying to earn their high school equivalency. Covid19 has forced us to educate online unexpectedly, and I have answered the call and have dedicated my time and resources. 

My laptop has been a workhorse for the last few months. I’ve nursed it- the memory failed and I replaced it. The battery failed and I replaced it. But now it has sadly met its end. 

I am asking for help so that I can continue educating and developing strong lessons for the students I am committed to. I use my computer to to hold online classes, maintain spreadsheets, process images and videos, and run simulations to teach science. 

I am not one to ask for help personally, but now is the time I am asking for help to continue educating my students.