trouble

I don't know if it's my computer or my monitor that's giving me trouble. Twice now it seems like the monitor has gone into power save mode, but it won't come out of it. I visited the settings and told it never to go into power save mode, but either that didn't stick, or it's just plain malfunctioning. Anyway, it's a bad time because SAT scoring starts today. Lately I've been thinking I need a new computer because I've had this one for a long time, and I'm afraid it's its time to go. I feel the same way about our car, which has about 255,000 miles on it. I got this monitor maybe a year ago through freecycle. I don't know how old it is.