High pitched buzzing coming from tower, then computer shuts off completely.

Karnak7

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Mar 26, 2015
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This question is different than the ones I've seen answered. At first I would get a random rare blue screen. Then I'd get slow downs/freezes when loading, or watching movies. The buzzing when loading or watching movies. Then restarting when watching movies or loading. Then the screen would flash black until I turned my computer off. Then buzzing would be happen more often and I would have massive slow downs when loading. Then the high pitched buzzing became continuous. I thought it was my video card, so I took it out and cleaned it, but when i put it back in, and turned on my comp, it booted up with continuous buzzing and then it just turned off completely. Now it doesn't even boot windows up anymore, buzzing is continuous once drives are loaded, and it usually turns off a short time after that. I thought maybe it was because my cpu was overclocked, so I went into bios to change that, but while in bios the computer shut off.

It's not the hdd, I got a SSD and it does the samething. It's not the Video card, I got a new one and it does the samething. The sound, when I located it, isnt coming from the power supply directly, when I listened it just seems like it is coming from the motherboard, or under it lol. It's not coming from any fans. It seems like its the power supply, but the sound isnt coming from it, and the power supply should be okay. mind you my comp is old now, got it back in 2012. is it an overheating cpu, a damaged motherboard, a damaged power supplies? It's between these 3, and I just dont know. I'm just going to have to get a new cpu and motherboard at this point, but i am not sure about powersupply.
 

PraxGTI

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Apr 17, 2008
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Typically if your PC is completely losing power, it will 85% chance be the power supply.

There is a 15% chance it is your motherboard, but honestly it isn't very likely. If your PC powers on, boots into windows, runs fine for a while, then the sound happens and the system shuts off, it is likely the power supply.

How aggressive was your overclock? What was your voltage vs stock voltage? Over-voltage breaks down the electronic pathways over time at a very accelerated rate than leaving it at stock voltages and eventually causes them to not conduct properly.

If you can swap the power supply with a known good power supply, I would do that before replacing any other components.