So maybe your computer is having a bad day. That happens.
But when your computer isn’t doing so well over a longer period of time, you need to think about what might be wrong and/or having someone else look at it.
Luckily, I have some resources for you.
The first is a “Routine Maintenance Guide” that is available here: http://windowssecrets.com/top-story/keep-a-healthy-pc-a-routine-maintenance-guide/ Fred Langa has been writing about computers for as long as I can remember, and he has some good suggestions in this article. This is an article that almost anyone can follow, you don’t need to be a computer expert to do these things!
But if the problem is beyond your capabilities, the Computer Repair Club has monthly clinics where the students in the Computer Repair program will look at your device — for free! If you need parts, they will charge for the parts… but sometimes all you need is something more than a quick tune up. The students in the program will do a best-effort attempt at getting your system up and running. Watch around campus for dates for the Clinics.
Beyond that, you’ll need to go to a repair shop and pay for assistance… not the best news, but sometimes you do need professional help with your system.