Computer Issue.

I dreaded posting in this thread for a bad reason :'(

For a while, my computer has been acting up when I turn it on.

It will turn on, then turn off, this will happen a few times, sometimes It boots a bit more than before, then turns off.

I found a way around it to be to open the disc tray when I turn it on and it boots a bit more, this for some reason makes it boot up fully. (Has only worked once so far, which was today just before making this thread).

PC Specs:

GPU: GeForce GTX 770
CPU: Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz
Memory: 16.00 GB RAM (15.90 GB usable)
Current Resolution: 1920 x 1080, 60Hz
Operating System: Microsoft Windows 8.1 Pro
SSD: Samsung SSD 840 EVO 250GB (40GB Free Space)
HDD: WDC WD1003FZEX-00MK2A0 (1TB) (818GB Free Space)

One small thing to add, I use the computer for extensive rendering, and previously, I've somehow used the memory up to the point where it has said there is no more memory, and the computer began running slowly till I restarted it or shut down the programme. Only happened once, but the computer began to do this boot up problem much more frequently after this, making me think it may be a memory problem.

 

Case COOLERMASTER CM690 III ADVANCED CASE
Processor (CPU) Intel® Core™i7 Quad Core Processor i7-4790k (4.0GHz) 8MB Cache
Motherboard Gigabyte Z97X Gaming 3: ATX, LG1150, USB 3.0, SATA 6GBs, XFIRE/SLI
Memory (RAM) 16GB KINGSTON DUAL-DDR3 1600MHz (2 x 8GB)
Graphics Card 4GB NVIDIA GEFORCE GTX 770 - 2 DVI, HDMI, DP - 3D Vision Ready
2nd Graphics Card NONE
3rd Graphics Card NONE
1st Hard Disk 250GB Samsung 840 EVO SSD, SATA 6Gb/s (upto 540MB/sR | 520MB/sW)
2nd Hard Disk 1TB WD CAVIAR BLACK WD1003FZEX, SATA 6 Gb/s, 64MB CACHE (7200rpm)
RAID NONE
M.2 SSD Drive NONE
1st DVD/BLU-RAY Drive 24x DUAL LAYER DVD WRITER ±R/±RW/RAM
2nd DVD/BLU-RAY Drive NONE
Memory Card Reader NONE
Power Supply CORSAIR 850W RM SERIES™ MODULAR 80 PLUS® GOLD, ULTRA QUIET
Processor Cooling Corsair H60 Hydro Series High Performance CPU Cooler
Extra Case Fans NONE
Fan Controller NONE
Sound Card ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
Wireless/Wired Networking 10/100/1000 GIGABIT LAN PORT - AS STANDARD ON ALL PCs
Wireless Router/HomePlugs NONE
USB Options MIN. 2 x USB 3.0 & 4 x USB 2.0 PORTS @ BACK PANEL + MIN. 2 FRONT PORTS
Firewire NONE
TV Card NONE
Power Cable 1 x 1 Metre UK Power Cable (Kettle Lead)
Operating System NO OPERATING SYSTEM REQUIRED
DVD Recovery Media NO DVD RECOVERY MEDIA REQUIRED
Office Software NO OFFICE SOFTWARE
Anti-Virus NO ANTI-VIRUS SOFTWARE
Browser Google Chrome™

 

Oo I will definetely try that, thankyou!

 

How long have you had this build for? Maybe , not sure , if you've had it for a long time maybe try checking on cpu's thermal paste, also try resetting CMOS, my pc didnt want to start at all before but doing it fixed it, it will erase bios settings though, maybe try booting without the cmos battery in then if it starts just insert it back in, check your motherboard manual first though.. just my suggestion, but yes could be a power/psu problem,try using different power cable and outlet

 

Get a compressed Air spray can and spray inside the PSU might just be a thick coat of dust interfering with the connections.

you just need to spray through the fan grate no need to open it.

 

Have you checked boot order in BIOS? I had a similar problem a while back and the only fix I found was to change the boot order.

 

Oh I forgot to say, I unplugged the power and did what nomy said and It's fixed now xD