System powers on, no video signal

[thetylero]

My system has been working with no problem for months now. I turned it off today and then turned it back on about 20 minutes later only to find that no video was being displayed on any of the monitors. I have since removed all of the components and rebuilt the system on a static free sheet and got it to boot up and load windows only on the first boot. I then turned it off and started it again and now have the same problem: no video being displayed, the system losing and regaining power(it also did this before i disassembled it) As i am typing this, the system has been left on for about 5 minutes and is not displaying video.

 

[weberdarren97]

What is your power supply?

 

[thetylero]

What is your power supply?

Corsair CX850M.

while we're at it, for reference:

i7 4770k @ 3.8 - H100i
MSI Z97 motherboard
16GB Corsair Vengeance 2400MHz
two GTX 970s, one liquid cooled
3SSDs, 2 HDDS, OS on SSD

 

[weberdarren97]

I hope it's the primary GPU that's liquid cooled...

Also, my main point... The Corsair CX series is very low quality and voltage irregularities may have damaged your components. Reference here http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html for help deciding on a power supply. For reference, I would recommend a cooler master V750 as a replacement.

http://us.coolermaster.com/product/Detail/powersupply/v-series-psu/v750.html

PCPartPicker part list: http://pcpartpicker.com/p/G9bDLk
Price breakdown by merchant: http://pcpartpicker.com/p/G9bDLk/by_merchant/

Power Supply: Cooler Master 750W 80+ Gold Certified Fully-Modular ATX Power Supply ($119.99 @ Newegg)
Total: $119.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-05-09 09:13 EDT-0400

Please note that power cables on the V series are ribbon style but are very thin and light (yet enough for the amperage) and are not wide enough to block airflow or get in the way of cable management. The 20+4 pin P1 power connector's cable is round, so it's not obnoxiously wide or anything like that.

 

[thetylero]

I hope it's the primary GPU that's liquid cooled...

Also, my main point... The Corsair CX series is very low quality and voltage irregularities may have damaged your components. Reference here http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html for help deciding on a power supply. For reference, I would recommend a cooler master V750 as a replacement.

http://us.coolermaster.com/product/Detail/powersupply/v-series-psu/v750.html

PCPartPicker part list: http://pcpartpicker.com/p/G9bDLk
Price breakdown by merchant: http://pcpartpicker.com/p/G9bDLk/by_merchant/

Power Supply: Cooler Master 750W 80+ Gold Certified Fully-Modular ATX Power Supply ($119.99 @ Newegg)
Total: $119.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-05-09 09:13 EDT-0400

Please note that power cables on the V series are ribbon style but are very thin and light (yet enough for the amperage) and are not wide enough to block airflow or get in the way of cable management. The 20+4 pin P1 power connector's cable is round, so it's not obnoxiously wide or anything like that.

Yes, the primary GPU were all displays are attached is the liquid cooled one.

Are all of the Corsair PSUs low quality in your opinion? Most of my components are Corsair and i would prefer to stick with them for new components as well. I believe my warranty should still be active as well, if this is the problem.

As of now, i have the system stable, power wise, and it hasn't lost power since i took off some cable extensions and plugged directly in. I have the system up and displaying, but now I am experiencing: Inaccessible Boot Device.

 

[weberdarren97]

The Corsair CX series is Tier 4 according to the Tier list. Tier 4 is described as "Built down to a low price. Not exactly the most stable units ever created. Very basic safety circuitry or even thin gauge wiring used. Not for gaming rigs or overclocking systems of any kind. Avoid unless your budget dictates your choice" according to the Tier list.

However, if you intend to stick with Corsair, their AX/AXi series, HXi and RMi series are all Tier one, great power supplies that will last a long time before developing any minor problems. The Corsair RM850w is Tier two and would last a long time before developing any major problems.

Please note that the closer to Tier 1 they are, the less the variation in output voltage.

For now, please check that your boot SSD is properly connected both to SATA power from the power supply and to SATA to the motherboard (or SATA expansion card if you're using a dedicated controller).

 

[thetylero]

The Corsair CX series is Tier 4 according to the Tier list. Tier 4 is described as "Built down to a low price. Not exactly the most stable units ever created. Very basic safety circuitry or even thin gauge wiring used. Not for gaming rigs or overclocking systems of any kind. Avoid unless your budget dictates your choice" according to the Tier list.

However, if you intend to stick with Corsair, their AX/AXi series, HXi and RMi series are all Tier one, great power supplies that will last a long time before developing any minor problems. The Corsair RM850w is Tier two and would last a long time before developing any major problems.

Please note that the closer to Tier 1 they are, the less the variation in output voltage.

For now, please check that your boot SSD is properly connected both to SATA power from the power supply and to SATA to the motherboard (or SATA expansion card if you're using a dedicated controller).

The system is losing power on and off once again, so i did not solve the problem. In a hope to solve it, i purchased and one-day-shipped this PSU: http://www.amazon.com/Corsair-RM750i-Modular-Supply-Certified/dp/B00YPNSQTU

Thoughts on that supply?

-also, thank you for the list breakdown, i greatly appreciate it.

 

[weberdarren97]

That's a fine PSU