Need laptop repaired

Help plea, Canada

I am a 28 year old individual in a wheelchair and having a working computer is very important to me. It's my life-line to the outside world, as I live alone, and struggle with even getting a ride to the grocery store, let alone seeing anyone socially especially since all but two of my friends live in other cities or countries. Yesterday my laptop shut off by itself and it won't turn on - a laptop i'm still financing, and would rather see repaired than the oft suggested 'just get a new one' as if that was any more affordable. If I can raise enough to get the warranty renewed(300$) then I can be covered on any repairs, including this one, that might pop up in the next year. Please help me. I have temporarily borrowed a friend's laptop so that I could make this post, and try and find a solution to my problem.