Does anyone else's computer just decide to reboot when you're in the middle of something?

to be on the safe side; save all your work on cds. in November 2004, I bought a computer, in New year's eve that year, my computer clashed so we had to insert new hard drive. maybe you should go to the computer store and tell them about it.

yea...not happy when it happens

This is an article which describes what that might be and how to diagnose the problem:

http://www.computerhope.com/issues/ch000605.htm

ex.:
This issue could be caused by any of the below possibilities.

Software issue or error.
Hardware issue or error.
Heat related issue.
Computer virus.
Issue with operating system.

Yes, mine does that all the time.

It gets a little warm, yes!

I think you have too much dust/dirt inside of your computer and it is over-heating. A little dust in the CPU fan can make quite a difference in temperature.

no but anything else goes robomatic
no unidentified flying outside random rebo's in my laptop.

Does it do it when you run a particular program? If s it could be a corrupt file. It could be over heating if it does it at random. My laptop actually works better when it's a little warm! I did have a problem with a start up file not long ago, it was a data file and as soon as the program tried to read it my computer shut down. That was a big problem. I only had about 30 seconds after I switched on to find the corrupt file or the computer switched off again. I got it eventually. I think it was yahoo Instant messenger and as that tends to have problems anyway I uninstalled it. I often run task manager and check to see what files are running and some are in memory but not doing anything as soon as they do you get a reboot or the thing switches off; or worse the BLUE SCREEN OF DEATH! Now that one is hard to fix! lol You can run Task manager usually by pressing CTRL-ALT-DEL together or right click your task bar and click task manager. A weird problem is when Task manager works but no menus come up. I had that for months and Microsoft sent me to a site that wanted to charge a lot of money to fix the problem. It turned out it has a minimal mode and you just click the border and it goes back to normal.

One final tip, as I write this Google Chrome is checking my spelling; now that is cool! It's a shame it can't spell Google; I shall have to add it to it's dictionary!