My laptop (used, but not super old or anything) has suddenly started shutting down whenever I type anything for more than a minute or two (I'm writing from my desktop computer!) So I can no longer write messages on facebook or chat with anyone without it shutting down. However, I can play a movie or show just fine all the way through and when it's just on all day without me trying to write anything for more than a minute it doesn't behave oddly. My boyfriend said it might be overheating but it's always cool to the touch when I'm not using it (I keep it lifted a bit on this anti-heating board a friend got for me--don't know what it's called, I'm not tech-savvy, but it's always worked.) So then my boyfriend said maybe it requires a new keyboard? Sometimes I can see the message it shows--and it's always a blue screen--right before it shuts down. Other times it shuts down way too fast and the blue screen is on for a split second and that's it. What the blue screen says though is that I should check my hardware and software to make sure they're properly installed. Is this what I need to do and how do I do it? I don't know much at all about these things. And if I need a new keyboard does that mean I have to buy one? Are they expensive? I really hope not, because I can barely afford that at this point! Thank you to anyone who answers!!!