So, there was a specific reason why I wasn't around today. My computer decided it would bite the dust this morning. Not sure what happened, but she wouldn't turn on. No mobo light so that was a very bad sign.
I'm on a laptop right now so I'm not sure whether it was the PSU going out or the mobo possibly going bad. Come to think of it, she's had problems recently.
In all seriousness, though, that has to suck. I had a laptop die on me a year or so ago. Sad day.
Are you able to get important files out of your hard drive, or has that crapped out too? I'm also interested in knowing the specifications of the computer and its age; its untimely death might have just been due to its antiquity.
Jan 16 02:59:42 <Firebot> SOLD: Aurora to the really good reshirams for 6000.
Jan 16 03:00:12 <Bunnelby> dude aurora is actually a good buy cause
Jan 16 03:00:16 <Bunnelby> sweep disciple
Jan 16 03:00:21 <raseri> mini sweep
Funny, that song is playing on my radio now as I type this O_o
Anyways, if this is a desktop, it's possible that your power supply unit died. Those can be replaceable, but you have to make sure it can fit into the tower of the machine and that it's just right for your motherboard or else you could fry some of the components. Don't take my word for granted, though, but I have little-to-no experience on PSU replacement, so it's just a guess.
Sorry for the delay, been busy with Pokemon rom hacking with my laptop.
No post from the mobo, I would usually get one every morning. It just wouldn't turn on. I checked the power switch on the PSU, no luck either way. I only have one CPU. I tried reinserting the cmos battery, nothing happened. I wasn't fiddling with any settings, so it just died out of the blue.
Also I doubt it's a faulty PSU those things are resilient, a CPU will die long before PSU does.
Actually, that's not the case at all. CPU failure rates are VERY VERY LOW. Unless you're overclocking wrongly and pumping too much voltage through it for an extended period of time, they just don't die (even then, they tend to degrade, rather than die outright - you can turn a motherboard on without a CPU, it will just beep and fail to POST)
PSUs on the other hand, especially consider the number of low-quality/budget models, fail fairly often. In my experience (during 3 years as a PC repair tech), PSUs are a high-failure-rate item (as are HDDs, memory) and I have seen ONE bad CPU, which was on a system in a highly polluted-air environment, where the air was slowly corroding components - so it's not even a normal failure. To clarify further, that CPU did not die outright, it just wasn't stable at stock speed (200MHz under was fine).
If it won't turn on AT ALL (no noise, no fans, no lights), then it's probably 85% likely to be the PSU and 15% the motherboard. There are... questionably-safe ways of testing if the PSU will turn on by hotwiring two specific pins on the 24-pin plug, but the safest way (for you, not the parts) is to borrow or buy a new PSU and try it. Even if the mobo is dead, the PSU fan should kick in, so it's almost certainly the PSU.
Of course, in the event that the PSU blew catastrophically, it could have taken out other components. Not that common, but keep it in mind during troubleshooting. Good luck!