Monitor Goes Black - No Signal

Hi All,

I'm having an issue with my new PC, hoping you can help.

Had the PC built in October, so far so good.....however, recently I've started to get regular problems where the PC Monitor will randomly go black and show "No Signal".

So far I've tried.....

(1) Taking the power cables out (from monitor and PC), restarting. - This works and the PC comes back on, does not solve the root cause of the error as its appeared again since then.

(2) Also tried removing the RAM and Graphics cards then plugging them back into the motherboard - so far so good on this one, however as above it has reappeared since then.

Also had a quick search around google and struggling to find similar errors that have a working solution.......other than "Its broken, contact your vendor".

My build is below.....appreciate any assistance you can offer, thanks in advance.....

Monitor = ASUS ROG SWIFT PG278Q (not purchased through PC Specialist - been working fine so far, and works on other PC)

Case NZXT H440 MID-TOWER BLACK/RED GAMING CASE
Processor (CPU) Intel® Core™i7 Quad Core Processor i7-4790k (4.0GHz) 8MB Cache
Motherboard ASUS® MAXIMUS VII RANGER: PCI-e 3.0, SATA 3.0, USB3.0
Memory (RAM) 16GB KINGSTON HYPER-X BEAST DUAL-DDR3 2133MHz X.M.P (2 x 8GB)
Graphics Card 4GB NVIDIA GEFORCE GTX 970 - 1 DVI, 1 mHDMI, 3 mDP - 3D Vision Ready
2nd Graphics Card 4GB NVIDIA GEFORCE GTX 970 - 1 DVI, 1 mHDMI, 3 mDP - 3D Vision Ready
3rd Graphics Card NONE
1st Hard Disk 500GB Samsung 840 EVO SSD, SATA 6Gb/s (upto 540MB/sR | 520MB/sW)
2nd Hard Disk 2TB WD CAVIAR BLACK WD2003FZEX, SATA 6 Gb/s, 64MB CACHE (7200rpm)
3rd Hard Disk NONE
4th Hard Disk NONE
RAID NONE
M.2 SSD Drive NONE
1st DVD/BLU-RAY Drive NONE
2nd DVD/BLU-RAY Drive NONE
Memory Card Reader NONE
Power Supply CORSAIR 850W RM SERIES™ MODULAR 80 PLUS® GOLD, ULTRA QUIET
Processor Cooling CoolerMaster Hyper 212 EVO (120mm) Fan CPU Cooler
Fan Controller NONE
Sound Card ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
Wireless/Wired Networking 10/100/1000 GIGABIT LAN PORT (Wi-Fi NOT INCLUDED)
Wireless Router/HomePlugs NONE
USB Options MIN. 2 x USB 3.0 & 4 x USB 2.0 PORTS @ BACK PANEL + MIN. 2 FRONT PORTS
Modem NONE
Firewire NONE
TV Card NONE
Power Cable 1 x 1 Metre UK Power Cable (Kettle Lead)
Operating System Genuine Windows 8.1 64 Bit - inc DVD & Licence
DVD Recovery Media Windows 8.1 (64-bit) DVD with paper sleeve
Office Software NO OFFICE SOFTWARE
Anti-Virus NO ANTI-VIRUS SOFTWARE
Browser Google Chrome™
Monitor NONE
2nd Monitor NONE
3rd Monitor NONE
4th Monitor NONE
DVI-D, HDMI & Display Port Cables NONE
Display Port Adapter / GeForce 3D Vision NONE
Keyboard & Mouse NONE
Mouse NONE
Gaming Mouse Pad NONE
NVIDIA SHIELD™ NONE
Speakers NONE
Webcam NONE
Headsets NONE
Surge Protection NONE
Cable Tidy NONE
Printer NONE
External Hard Drive NONE
Warranty 3 Year Gold Warranty (2 Year Collect & Return, 2 Year Parts, 3 Year Labour)
Home Installation NONE
Data Recovery NONE
Delivery STANDARD INSURED DELIVERY TO UK MAINLAND (MON-FRI)
Build Time Standard Build - Approximately 7 to 9 working days
 

mantadog

Superhero Level Poster
Have you tried a different display, for example your TV? it sounds like a dodgy GPU to me, good thing is you can arrange for PCS to send you a new one to fit yourself as you seem confident enough and have the gold warranty.

Just give them a call and explain whats happening, they should be able to take some basic info over the phone and judge if you need a new GPU sent out by that.
 
Have you tried a different display, for example your TV? it sounds like a dodgy GPU to me, good thing is you can arrange for PCS to send you a new one to fit yourself as you seem confident enough and have the gold warranty.

Just give them a call and explain whats happening, they should be able to take some basic info over the phone and judge if you need a new GPU sent out by that.

Thanks Mantadog, I'll give them a call and get an update
 
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