Reddit mentions of Coolmax LCD Power Supply Tester PS-228

Likely you either burned something up in the power supply or possible on the board. His harddrive might still be in working order.

Open the case and observe the board itself. You can usually see a brown or black mark on the board if anything on it was actually the source of the smoke.

Disconnect everything from the power supply and you can test it with a power supply tester.

http://www.amazon.com/Coolmax-Power-Supply-Tester-PS-228/sim/B002R06PGE/2

Is similar to the one I own but you can find them other places. If the power supply tests out it is likely the board that was the source of the smoke.

With any luck it is just the power supply and that can easily be replaced.

Before you rebuild his whole machine test that it's actually fried and not just a bad PSU.

I know you probably want a fast solution, but if you do not have a power supply you can substitute you will need something like this: http://www.amazon.com/eForCity-24-pin-Power-Supply-Tester/dp/B005CTCD6S/ref=cm_cr_pr_product_top

I do not have personal experience with that one, but I do own this: http://www.amazon.com/gp/product/B002R06PGE/ref=wms_ohs_product?ie=UTF8&psc=1

Even if you don't need a tester right now, I advise having one on hand, especially if you have multiple PCs to maintain. In my case, I have lotsa family and friends I help, and a PSU tester has come in handy over the years.

Then at this point I'll need to know exactly how far into the boot process the computer gets to. When you hit the power button, is there text on your monitor or nothing at all? If there is text, what exactly is displayed?

This blog post might be helpful.

http://pcsupport.about.com/od/findbysymptom/tp/computer-wont-turn-on.htm

Specifically try No. 5, 9, and 10 of the nothing on screen part.

You can test your power supply with a power supply tester. I do not recommend trying it with a multimeter as the post tells you to do.

Number 12 might be helpful if you get a Post card, I didn't recommend it though because almost all POST cards are made in China and have very little documentation to go along with it. In short what you do is plugin the card, find the number it gives you, then cross reference that with an error code table. Seen here PDF.

Luckily all hardware you need should be under 20 dollars on Amazon each.

Good luck!

Questions...

>I checked and it was because it was overheating

You checked what specifically to confirm overheating?

>so i changed the oaste

Changed the what?

What the noise from the power supply caused by the fan or was it some other type of noise?

Based on the little bit here it is looking like your power supply is the culprit but I may need more details. My suggestion is to purchase a power supply tester. Something like this. You can confirm that you power supply is in fact dead before you drop $$$ on a new one.

There's a pulse that a power supply is supposed to provide to the motherboard within 0.5 seconds of power up to tell it that power is OK. I suspect that your supply is failing to provide this pulse the first time you turn it on and the motherboard is aborting the boot process. The PSU may not provide stable power quite fast enough.

I have one of these power supply testers and one of the checks it does is the Power OK pulse timing. http://www.amazon.com/Coolmax-Power-Supply-Tester-PS-228/dp/B002R06PGE

0.1 (Forgot to mention this and too lazy to fix all my numbers so it gets to be 0.1) This may seem obvious but have you tried using a different monitor?

1. Make sure you didn't accidentally ground your motherboard (check underneath for any screws or metal shit that may have rolled under and grounded the motherboard to the case) if you grounded your motherboard it has protection in place that will cause basically the issues you describe
   
   
2. Make sure you didn't accidentally unplug any of the power cords to the motherboard make sure the standard large plug is plugged all the way into the motherboard and the additional 4 pin connector on the side of it is plugged in as well, make sure there are no empty plugs on the motherboard (there will usually be the large plugin and a secondary one on new motherboards)
   
   
3. Carefully take out the RAM and CPU turn on computer see if the beeps sound different, turn off put back in.
   
   
4. If you have an extra power supply handy try swapping it out for the new one or even borrow one from your pc for testing purposes (if it works you know you need a new one) if not buy this its cheaper then buying a new power supply and is handy as hell to have around for 15$ can't go wrong.
   
   
   
   
   This is definitely not a driver issue since you are not even getting video outside of windows, could be a faulty power supply, a grounded motherboard, a faulty motherboard, or a faulty CPU.
   
   
   Also what is the wattage of his power supply? a 570 uses significantly more power than a 460 you could have overloaded the power supply.
   
   Also is his 1TB 1 hdd or 2? and how many cd-roms, cd-burners? What type of ram? (trying to get an estimate of how powerful a power supply you would need)