I was on my computer today for a couple hours, which is maybe 4-5 months old and it shut off unexpectedly. When I turned it back on, it asked if I wanted to run in safe mode but I chose to run normally, and everything seemed to be working fine for about 15-20 minutes until it shut off again. I then tried turning my computer back on, but nothing happened aside from the light turning on. I went to do something else, came back a couple hours later and it started up fine, but after 20 minutes or so it shut off again and I haven't been able to turn it on since. I thought it may have had something to do with the power bar I it connected to, but using a different one and trying other outlets didn't work. While trying different outlets I also noticed that the case fans weren't running even when the power light was on, and am not sure about the CPU fan. I had a similar problem with an older PC a few years ago which was due to the power supply being dead, although my computer still has power when I try turning it on, and this PC is fairly new and I wouldn't think it would die so quickly. I'd rather not have to take it in somewhere to get it looked at, as it costs about $80 or more just to find out what the problem is, but I'm also worried about frying the CPU or the MB since the fans don't seem to be working.
Thanks for any help.