PSU Problems?

hasanzhang · July 26, 2014

So within less than a week my new graphics card and power supply arrived. My original computer was a HP h8-1400ex. It has and core i7 3770 non-k, 8 GB 1600 MHz ram and a really crappy 7570 which I replaced with my new graphics card which is a reference 780ti. It worked pretty well and I played some games with it for around 3-5 days for a 1-3 hours each day straight. Today I opened up my case and did some cable management but I don’t think that is the cause. After putting the computer back together I watch a few YouTube videos and gamed for 30 minutes to an hour. I was playing Watch Dogs on high and I think it was utilizing it 100%. I didn’t overclock while playing games but I did try overclocking it a few day before. The overclock wasn’t applied. So while playing Watch Dogs it just shut off. There was a burnt smell coming power supply which was from a company called Tagan and the model was tg 700u. I don’t think it was going over the limit since it is a 700w power supply. The old one is 460w from Hp. I took the computer apart and it replace it with my old power supply. It booted and worked fine without the graphics card. I plugged the graphics card in and it lit up. I didn’t have enough pcie powers on the old psu to see if it had been affected. The question is why it happened. Is it because of overheating or delivering over 700w? It was fine for the longer gaming sessions so why did it happen in 30- 60 minutes? The room temperature I was playing at was only slightly higher and the case was open with a fan blowing through it once in a while. It is a very cheap power supply so maybe it is just a manufacturing defect? And also will the graphics card be affected? I’m really worried about that since I just got it and it is pretty expensive. Thanks in advance!

Phllips · July 26, 2014

What brand is the power supply

PokémonTrainerFour · July 26, 2014

I would replace that PSU. Get something like a Corsair or a Cooler Master.

ALWAYS BUY TRUSTED BRAND PSUS, K? If your PSU isn't stable, it could kill all of your components.

You would be lucky if your GPU survived that PSU and the HP one that didn't have enough watts to deliver.

Archangel1994 · July 26, 2014

Rule number one when building a pc. Never ever go cheap on the psu and never pick a small/unknown brand.

Your psu is complete shite. Get a new one ASAP without ever turning on your pc with that shitty one and test your system with a new good psu with everything at stock settings.

If something still doesn't work then that shitty psu most likely killed something.

SlayerOfHellWyrm · July 27, 2014

My guess... is the PSU failed. The PSU is the most important part of the PC. If you're gonna spend money, spend it there and go with name brand, well known, PSU manufacturers. There's a reason they are well known, there stuff just works. Going off brand means you ris using a PSU with inferior internal components, and much worse quality control/standards which will always lead to a premature failure.