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New Build Randomly Powering Off

Hi everyone, I'm having an issue with my new build. When I start it up, it will restart randomly. Sometimes I'll get into windows for 20 minutes and it'll power down, and sometimes I can't even get past the boot screen.

I've tried removing everything but the bare essentials (CPU, PSU, HDD, Mobo, and one stick of RAM) and tried alternating between my two sticks of RAM. Still the same problem. I also tried changing the speed of my RAM in the BIOS to the recommended speed and still no luck.

Pretty sure it's not an overheating issue, as when I go to the BIOS the CPU temp idles and seems pretty normal (35-40 degrees), but I'm new to building so I'm really not sure if that means anything.

Here's my rig, and thanks in advance to anyone with suggestions.

CPU: Intel Core i5-4570 3.2GHz
Mobo: Gigabyte GA-H87-D3H ATX LGA1150
Memory: Corsair XMS3 8GB (2x 4GB) DDR3-1600
HDD: Seagate Barracuda 2TB 3.5" 7200 RPM
GPU: XFX Radeon HD 7950 3GB
Case: NZXT Source 210 Elite (Black) ATX Mid Tower
PSU: XFX 550W 80 PLUS Bronze Certified ATX12V/EPS12V
Disc Drive: Samsung SH-224DB
OS: Windows 8

I've also got a wireless PCI-E card but I doubt that's causing the problems.
5 answers Last reply Best Answer
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  1. I think your main problem is your PSU bro. Try using it on another rig. Even though it's brandnew, it can still have some problems. Do you use an AVR or UPS?
  2. adimeister said:
    I think your main problem is your PSU bro. Try using it on another rig. Even though it's brandnew, it can still have some problems. Do you use an AVR or UPS?


    I know what a UPS is but I don't know what an AVR is, I just have it plugged into a wall outlet if that's what your asking haha

    If you think it's the PSU I might give XFX a ring and see what they've got to say about it.
  3. Best answer
    Yea that's what I meant. :) There's a risk in plugging it directly to your wall when lightning strikes near your home. haha Tried it on my PC before. hahaha Anyway, try the PSU on another rig bro.
  4. adimeister said:
    Yea that's what I meant. :) There's a risk in plugging it directly to your wall when lightning strikes near your home. haha Tried it on my PC before. hahaha Anyway, try the PSU on another rig bro.


    Oh no haha, that doesn't sound good. Yeah I've got to go out for a couple of hours, but I'll try it on my 5 year old HP when I get back. TBH I really hope it is the PSU and not something like the CPU, I feel like it'll be a lot easier to return a PSU.
  5. Yea, because it it was the CPU, I know it would throw a BSOD. Goodluck! And don't get struck by a lightning. :D hahaha
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