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My computer was built last year in September and everything had gone well, until now. The PC did not even power on. I tried to clear the CMOS without any luck.

I managed to remove the GPU, and it finally powered on. Everything worked well, as I connect my monitor to the integrated GPU. However, whenever I try to connect my GTX 1070 to my motherboard, my computer won't start. I then started to figure out that the PSU causes the problems.

I have a Cooler Master V650 650W PSU with an ASUS Strix GTX 1070 GPU. So my question is: Do I have to buy a more powerful PSU?

  • 650W should be enough. This could be a few things: motherboard broke and your PCIe 16x slot is broke so its causing a short or something, PSU broke and should be able to be repaired under warranty, or GFX card (hope it's not this one) broke and is taking up way too much power for some reason.. – var firstName Jul 5 '17 at 20:14
  • Thanks for the answer man, I'll try to test the GPU and the PSU with my mate's PC :-) – Jonathan Lo Jul 5 '17 at 20:23
  • @varfirstName The computer suddenly worked well with the GFX! I just can't figure out why it sometimes fails. – Jonathan Lo Jul 5 '17 at 20:50
  • Sounds like a problem with the GPU, it should be under warranty, given it's the current generation – Ramhound Jul 5 '17 at 21:01
  • Try reseating power cables, particularly the ones to the GPU. (If you haven't already.) – David Schwartz Jul 6 '17 at 7:18
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If your system wasn't powering on at all, your GFX card is probably a little big and was pushing against power button headers if not even a fan started. This happened with my GPU previously, and has taught me to be careful with it. Otherwise, the GFX card might be damaged, in which case you can get it checked out if it's still under warranty.

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