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Fans spin and lights turn on, but no video output

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Posted · Original PosterOP

So I just finished putting together my system and I'm having quite a strange issue.



- Intel Core i7 920

- ASUS P6T Deluxe v2

- Corsair XSM3 DDR3-1600 (6x2GB)


- Corsair AX860i PSU


- No drives are currently connected

- Motherboard is placed on a piece of cardboard


The situation:

The lights on my motherboard turn on (the onboard power button LED is red green, the onboard reset button LED is green red, and the RAM led is off), my graphics cards lights are on (and they're both green) and its fans are spinning, my CPU cooler's fans are on, and my AX860i's self-test LED is green and its fan spins up. But when my monitor (which is definitely working) is plugged into my graphics card and my PC is turned on, I get no video output or BIOS screen when I hold the DELETE key. My monitor's LED is just blinking red.


Troubleshooting steps I've taken:

- The RAM is working because I tried my two RAM sticks in another PC.

- The PSU is working because I tried it in another PC.

- I've tried using just one stick of RAM in my motherboard. Tried using a different RAM modules but still no video output.

- I've tried using just two RAM modules in my new motherboard (and swapped those around).

- I've tried another graphics card in my new PC (a GT 710 or something) but still no display output.

- I've cleared the CMOS by removing the battery for some time and then putting it back in (I've tried this like 10 times).

- I've reseated all the cables multiple times.

- I've tried using multiple keyboards (one PS2 and a few USB ones).

- I've tried using another monitor.

- I've tried another CMOS battery.

- I've reseated the CPU.

- I've reseated the graphics card.


Some other (possibly important) notes:

- My keyboard's LEDs don't turn on (for caps lock and num lock).

- My motherboard doesn't have a debug speaker.

- My PSU's self-test LED stays green when the PSU is on and the system is powered on, but the fan stops spinning after around 30 seconds.

- My CPU doesn't have an iGPU.

- I don't have any spare cables for the PSU.


Please help me if possible. If you have any questions, feel free to ask. Thanks!


Here's my motherboard manual: https://dlcdnets.asus.com/pub/ASUS/mb/LGA1366/P6T_Deluxe_V2/E4398_P6T_Deluxe.pd

Primary PC:


CPU: Intel® Xeon® X5675 @ 4.62 GHz 1.4V Motherboard: ASUS P6X58-E WS (BCLK: 201 MHz) CPU Cooler: NZXT HAVIK 140 & Noctua NA-SRC10 RAM: Crucial DDR3-1606 8-11-11-28 (2x4GB) GPU: ASUS GeForce® GTX 770 DirectCU II (Core Clock: 1250 MHz, Memory Clock: 3505 MHz) SSD: Samsung 860 EVO 2.5" 1TB (W10 Pro) HDD: WD Green 3.5" 1TB (7.2K RPM) PSU: Corsair AX860i & White CableMod ModFlex™ Cables Case: Fractal Design Meshify C TG (White) Fans: Intake: 1x Dynamic X2 GP-12, Exhaust: 1x Dynamic X2 GP-12 Monitors: LG 24GL650-B 23.6" 1080p 144Hz 300 nit TN FreeSync & Samsung S24D390 23.6" 1080p 60Hz 250 nit PLS (OC'd to 75Hz) Keyboard: Logitech G710+ (Cherry MX Browns) Mouse: Logitech G502 Proteus Spectrum Mouse Pad: Steelseries QcK Racing Wheel: Logitech G27 & Six-Speed Shifter Audio: Bose SoundSport In-Ear Headphones (Charcoal) CPU-Z

Primary Laptop:


Model: Apple MacBook Pro 13" 2019 (Silver, Touch Bar, 2x TB3 Ports) CPU: Intel® Core™ i5-8257U @ 1.4 GHz RAM: LPDDR3-2133 (8GB) GPU: Intel® Iris® Plus Graphics 645 SSD: NVME PCIe 256GB Display: 13.3" 2560x1600 60Hz 500 nit IPS Battery: 58.2 Wh dbrand Skins: Trackpad (White Marble) & Palmrest (Hyperblack Titanium) Audio: Apple AirPods Pro

Secondary PC:


CPU: Intel® Core™ i7-950 @ Stock Motherboard: Gigabyte GA-X58A-UD3R CPU Cooler: Corsair H50 RAM: Corsair XMS3 DDR3 (3x2GB) & Crucial Ballistix Sport DDR3 (1x4GB) GPU: HIS Radeon HD 5770 SSD: None HDD: None PSU: HP 500W Unit Case: Corsair 100R

Secondary Laptop:


Model: ASUS ROG G750JW CPU: Intel® Core™ i7-4700HQ @ 3.4 GHz RAM: DDR3-1600 11-11-11-28 (3x4GB) GPU: NVIDIA GeForce® GTX 765M SSD: SanDisk SSD Plus 2.5" 120GB (W10 Pro) HDD: Toshiba 2.5" 750GB (5.4K RPM) Display: 17.3" 1080p 60Hz 350 nit TN Monitor: Dell E2418HN 24" 1080p 60Hz 250 nit IPS Battery: 88 Wh Mouse: Logitech MK235 Audio: Beats Studio3 Wireless (Midnight Black)

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maybe your PCIE slot on the MOBA is broken, can you try you GPU in another PC?


intel core i5 7500 | nividia gtx 1070ti | mobo: msi b250 PC mate | RAM: corsair vengence 8gb DDR4 2400mhz | SSD: samsung 850 evo 250gb | HHD: western digital 1TB 7200 rpm |CPU cooler: MSI core Frozr L | case: corsair spec 03 | 

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