Computer powers on but displays only for a couple seconds!

MaxAlbatross

Reputable
Apr 12, 2014
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4,540
Hi,

I know you guys probably get a lot of these post about computers being powered on but not displaying, but i haven't seen anything similar on the forum.

It's my first build and im a newbie at this, i read all the manuals included with the parts and i assembled the whole thing.

When I powered my computer for the first time it powered off after a few seconds and then turned back on by itself. After, I could momentarily see the GIGABYTE logo and the computer was displaying ''Select drive to boot from'' which I think is normal.

My mobo's manual described that I had to press delete during post to access the bios. So I reset the computer and press delete at startup. This time it didn't power off but wasn't displaying anything. When i reset again I can only see a mouse cursor for a couple seconds and then it disappears. I tried it 3 times only to get the same results. The screen is still on since i can see the back light.

I then thought that it probably was the UEFI switch on my sapphire graphic card since I didn't press it and my mobo support UEFI. I pressed it but it didn't change anything. Since I have two bars of RAM I left only 1 bar on the first slot (tried them both) but it didn't change anything again.
I cleared CMOS values and reconnected the connectors, this time the computer reset itself but i still get the same problem.

All my fans are spinning and the LED on my graphics card is on. Please help! I only have a couple of days before i can get a refund from newegg if anything is faulty.

Here's my build:

CPU: AMD FX-8350 Vishera

Motherboard: GIGABYTE GA-970A-UD3P

RAM: G.SKILL Sniper Series 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1866

SSD: SAMSUNG 840 Pro Series MZ-7PD256BW 2.5" 256GB SATA III MLC

HDD: Planning to buy one later

GPU: Sapphire radeon R9 280x Vapor-x oc boost tri (the triple fan one)

Case: Fractal Design R4 Black Pearl

Power Supply: CORSAIR HX Series HX1050 Gold (I know 1050W is overkill but I planned on
expanding later)

Optical Drive: SAMSUNG Black DVD ROM SH-118BB


 

danielmoore2276

Honorable
Apr 8, 2014
93
0
10,660
Is your computer turning off by itself?

Verify that the power supply voltage switch is set correctly -

he power supply voltage switch is a small switch located on the back of the power supply. This small switch is used to set the input voltage to the power supply to either 110v/115v or 220v/230v.
Setting the power supply voltage switch to the incorrect input voltage could damage the power supply and possibly other parts of your computer.

The correct voltage is determined by the country where the power supply will be used. Check the Foreign Electricity Guide by Voltage Valet for more information on what voltage to set your power supply voltage switch to.

Check for causes of electrical shorts -

Electrical shorts inside the computer are often caused by stray screws in the case that have come in contact with the motherboard or other internal component. Screws are used to secure nearly every component to the inside of the case including video cards, sound cards, hard drives, optical drives, etc.

Pick up the computer case and gently rock it side to side. If you hear a rattling sound, a screw may have come loose and is rolling around inside your case. A few light shakes will usually knock it loose and onto the bottom of the case.
 

MaxAlbatross

Reputable
Apr 12, 2014
36
0
4,540
Ok, I just checked and it was my monitor that didn't support DVI for some reasons. The computer boots normally and i can access UEFI.

I checked and my PSU is autoswitching the Voltage input according to the manual and there are no switch on the back except on and off.

I feel like an idiot! Should have checked the monitor input first.

However, was it normal that the system reset itself the first time i powered it on? It never occurred again except when I reconnected the whole thing and cleared the CMOS values.

Thank you for your time.