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January 15, 2012 6:20:51 PM

I cannot get a evga 590 card to be recognized. Blank screen when booting up. Put card in another system all OK. Put another card in original system all OK . any ideas

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January 15, 2012 6:30:36 PM

what? if it work on both then what's the problem?
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January 15, 2012 6:33:22 PM

the 590 is not recognized on gigabyte mobo system.
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January 15, 2012 6:35:05 PM

it is ok on an asus mobo. and the 4650 ok on gigabyte mobo
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January 15, 2012 6:41:13 PM

which pci e version gigabyte have?
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January 15, 2012 6:41:27 PM

What PSU do you have?
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January 15, 2012 6:41:58 PM

Please provide your power supply's info. Hardware wise that should be the only limiting factor.

Software wise you may need to uninstall any AMD drivers and use drive sweeper to ensure everything to the old card is gone. This must be done with the 4650 installed.
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January 15, 2012 6:59:01 PM

xtreme5 said:
which pci e version gigabyte have?

I have the GA-Z68X-UD3H-B3 tried both pci-e slots
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January 15, 2012 7:00:07 PM

aaab said:
What PSU do you have?

900 watt .tried both outputs for card power . card lights on and fan runs
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January 15, 2012 7:01:16 PM

elbert said:
Please provide your power supply's info. Hardware wise that should be the only limiting factor.

Software wise you may need to uninstall any AMD drivers and use drive sweeper to ensure everything to the old card is gone. This must be done with the 4650 installed.

tried with a clean win 7 64 install with mobo drivers first
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January 15, 2012 7:21:26 PM

Dennis B said:
tried with a clean win 7 64 install with mobo drivers first

What power supply do you have?
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January 15, 2012 7:23:40 PM

900watt lepa gold g900-ma-r
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January 15, 2012 7:26:11 PM

acts like a poor contact with pci socket but tried both on mobo. and another pci-e card though not a 590 works ok
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January 15, 2012 7:28:46 PM

when using the 590 card boot screen is blank and monitor shows no dvi input.
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January 15, 2012 7:46:32 PM

Your power supply has 2 (465mm) 6+2 pin PCIe which you should use only one as both are on the 12v4 rail. The power supply 6+2 pin PCIe (550mm) are spread across 12V2, 12v3, and 12v4. The only way I can see you not getting enough power is if your using both 465mm 6+2 pin PCIe power connectors. Try using 2 of the 550mm pcie power cables while the card is in the top PCI_E slot. The 590 needs 50amps which each rail on your PSU is 30amps so you must get two rails in use for the card.
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January 15, 2012 8:12:54 PM

elbert said:
Your power supply has 2 (465mm) 6+2 pin PCIe which you should use only one as both are on the 12v4 rail. The power supply 6+2 pin PCIe (550mm) are spread across 12V2, 12v3, and 12v4. The only way I can see you not getting enough power is if your using both 465mm 6+2 pin PCIe power connectors. Try using 2 of the 550mm pcie power cables while the card is in the top PCI_E slot. The 590 needs 50amps which each rail on your PSU is 30amps so you must get two rails in use for the card.

will try it. But tried card on another computer with a 650watt ps and it worked fine
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January 15, 2012 8:40:31 PM

tried using ps like you suggested same problem. acts like card not making contact in socket but tried both sockets and card in another computer and it worked fine. Card is completely dead no output at all . Lights on card are on and fan runs. does not even show boot up screen
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January 15, 2012 8:43:44 PM

this is second 590 card first one would show but could not load drivers code 43. Now this one will not even boot. used onboard video and tried loading drivers but error says no nvidia graphic card found.
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January 15, 2012 9:09:28 PM

Dennis B said:
will try it. But tried card on another computer with a 650watt ps and it worked fine

Good number of 650watt PSU have only one rail with 48~52 amps. higher end brands will even oversupply and meet the 50amps but risk burnout. Other 650watts PSU with 2 rails will output more amps per rail as they have near 40 on each. See your 900w with 4 rails only equals about a 450watt on 2 rails. You really have a 450watt for your system and a 450watt for your video card all in one. This doesn't kill your power supply but you must get each power plug on separate 12v rails. You may have to try one of the pcie to molex adaptors. See those even use 12v2 and 12v3 so you may have to play around with it a bit to get enough power. You may have an under performing power supply worst case.

If you can I suggest testing the other power supply in your system. If it works then you should look at replacement the 900watt. You may want a higher watt 4 rail PSU or a ~800watt with 1 to 2 rails.
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January 15, 2012 10:14:31 PM

would this keep the card from even able to boot up. ?? does not show any output to screen,, nothing. I read some where if power was low lights on card might blink. or not come on
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January 15, 2012 11:33:04 PM

Power (watts) is voltage x amperage. Since voltage is a constant you need sufficient amperage in the PSU to fire up the video card on all cylinders. As per others, your PSU just cant cut it on a single rail. You'll have to scrounge up the clams for a better PSU
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January 16, 2012 12:43:43 AM

with 590 card in socket I can use the onboard video just fine. everything else works fine. Play games burn dvd etc. just no output from 590 card. cannot load drivers. error says no nvidia device found. will check psu voltages under load tomorrow.
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January 16, 2012 12:49:12 AM

tried using two different rails . card lights up fan runs etc.
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January 16, 2012 1:06:32 AM

Dennis B said:
would this keep the card from even able to boot up. ?? does not show any output to screen,, nothing. I read some where if power was low lights on card might blink. or not come on

If the cards 2 PCIe power plugs was tied to only one rail yes. With only a single rail output of 30amps it doesn't stand a chance. If you get it to use the 12v4 rail and either of the 12v2 or 12v3 rails it should work. Even then that would depend on how much load your drivers are pulling from that rail.

Also is the 590 factory overclocked? This will means a bit more power. Wish Nvidia would have made these have 3 power plugs. If you find no combination of plugs will work you may want to get a different PSU.

Here is a list of certified power supplies. For a 590 You will need to look at the dual 480/580 or dual 470 lists.
http://sli.nvidia.com/object/slizone_build_psu.html

I would suggest an Antec high current 900watt. This PSU has the same number of rails as your but its a top tier vendor and each rail produces 40amps. Knowing Antec each rail may hit as high as 50amps as they tend to produce way more power than they are rated.
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January 16, 2012 1:14:58 AM

Dennis B said:
with 590 card in socket I can use the onboard video just fine. everything else works fine. Play games burn dvd etc. just no output from 590 card. cannot load drivers. error says no nvidia device found. will check psu voltages under load tomorrow.

You should start the system with the monitor plunged into the 590. You rally shouldn't connect to the onboard and attempt to install drivers for the card. When you do this windows will installs generic drivers for your onboard video. You need to uninstall those intel drivers also. Shut the system down and plug into the 590 with it in slot 1. If the screen is black unplug the power from the wall outlet and try changing around the PCIE plugs to your power supply. Keep doing this until the screen lights up or once you have run out of choices.
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January 16, 2012 1:17:25 AM

thanks for the info. will try and monitor voltages on card tomorrow. under load and try some different combos of plugs.
Set up is for my grandson and he lives across town. would the psu cut off with high overcurrent or would voltage drop a little on that particular rail and other rails stay up. Is psu like four seperate 12 volt outputs
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January 16, 2012 1:33:43 AM

Your asking about over current protection. Your power supply states it protected against Over Power, Over Voltage, Over Current, Short-Circuit, and Brown Out protections circuits. It should shut down to protect your other parts but that depends on the quality of the power supply.
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January 16, 2012 1:43:34 AM

so severe misinformation in here. 8 pin pcie connectors are designed to supply 150 Watts Max. cards are designed around this. this means 25 amps for a 590(plus the power from the pcie slot), not 50. 12volts x 25 =300 Watts. you have 30 amps on one rail which is fine as the limit is only set by the current limiter and the supply can push more. on top of that it shouldn't even need that power on bootup

trying other rails is good and all. in case one is faulty, you have extra stuff on that rail, or there is something wrong with the supply. but you have a high quality well reviewed PSU. Don't run out and buy a new one. Try the 650 Watt in your system. if it works try and RMA your supply if its under warranty as it is perfectly capable and would have to have a fault.

if its not under warranty and the 650 works buy a high current SINGLE rail PSU to replace it. Multi rail PSUs all pull from the same 12 volt source, they just have current limiters between the supply and the group of connectors. The limiters are unnecessary and just cause problems. they come from an outdated "safety" standard and silly marketing departments. high quality PSU designs are now doing away with them

elbert said:
Knowing Antec each rail may hit as high as 50amps as they tend to produce way more power than they are rated.


This statement is wrong. the current ratings for rails are set by current limiters for "safety" reasons. by definition if the rail supplies more current then the limiter it is set for then the supply is faulty and should be returned. "rails" are different than the supply. the supply can deliver more current than listed. the rails should never
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January 16, 2012 1:51:44 AM

Dennis B said:
thanks for the info. will try and monitor voltages on card tomorrow. under load and try some different combos of plugs.
Set up is for my grandson and he lives across town. would the psu cut off with high overcurrent or would voltage drop a little on that particular rail and other rails stay up. Is psu like four seperate 12 volt outputs


all "rails" connect to one 12 volt supply. The rails each have their own (unnecessary) current limiters designed for 30 amps. to demonstrate if you added them all up you'd get 120 amps. 120 x12 = 1440 watts. way more then this supply can put out. the rail numbers are just what the limiter is set for, not actual supplies
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January 16, 2012 2:08:04 PM

unksol said:
so severe misinformation in here. 8 pin pcie connectors are designed to supply 150 Watts Max. cards are designed around this. this means 25 amps for a 590(plus the power from the pcie slot), not 50. 12volts x 25 =300 Watts. you have 30 amps on one rail which is fine as the limit is only set by the current limiter and the supply can push more. on top of that it shouldn't even need that power on bootup

trying other rails is good and all. in case one is faulty, you have extra stuff on that rail, or there is something wrong with the supply. but you have a high quality well reviewed PSU. Don't run out and buy a new one. Try the 650 Watt in your system. if it works try and RMA your supply if its under warranty as it is perfectly capable and would have to have a fault.

if its not under warranty and the 650 works buy a high current SINGLE rail PSU to replace it. Multi rail PSUs all pull from the same 12 volt source, they just have current limiters between the supply and the group of connectors. The limiters are unnecessary and just cause problems. they come from an outdated "safety" standard and silly marketing departments. high quality PSU designs are now doing away with them



This statement is wrong. the current ratings for rails are set by current limiters for "safety" reasons. by definition if the rail supplies more current then the limiter it is set for then the supply is faulty and should be returned. "rails" are different than the supply. the supply can deliver more current than listed. the rails should never

LOL first read a reveiw or 2 as Antec under rates their supply to meet lowest sigma. IE only 1 in so many thousand will only supply that amps on the rail. Even the OP's PSU doesn't hit the cut off limit on the rails to 40amp draw as per a review on the same site. Now 50amps is what the evga card requires again if you would read. Your wrong in a way as multi rail PSU do pull from the same source but when 2 PCIE power plugs is on the same rail you are limited to that rails max amps. IE even at his PSU max cutoff limit rail of 40amps it doesn't get his EVGA cards 50amps. Being that 12v rail 1 is taking away at good amount the max limit not even a full functioning rail and the PCI slot would be enough. This power supply produces a max of 73amps so the OP will have to get lucky with rails to get enough amps.

The Antec has a 45A OCP trip point on the four 12V rails but is only rated at 40.
http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
In the requirements it states 700w and 50amps. I have no ideal were you pulled from my posts that a PCIE plug carrys 50amps.
http://www.evga.com/products/moreInfo.asp?pn=03G-P3-159...

Guess this plus the antecs 45 OCP trip make your statement about cutoff wrong as its a bit more that stated.
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The four 12V rails on this unit are rated at 30A. That means the overcurrent protection is probably sitting at more than 40A.

http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

You claim I misinform then repeat my suggestion to try the 650watt in his PC.
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If you can I suggest testing the other power supply in your system. If it works then you should look at replacement the 900watt. You may want a higher watt 4 rail PSU or a ~800watt with 1 to 2 rails.

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Try the 650 Watt in your system. if it works try and RMA your supply if its under warranty as it is perfectly capable and would have to have a fault.


I understand you just joined tomshardware but please do some research.

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Multi rail PSUs all pull from the same 12 volt source, they just have current limiters between the supply and the group of connectors. The limiters are unnecessary and just cause problems. they come from an outdated "safety" standard and silly marketing departments. high quality PSU designs are now doing away with them

Very wrong as this safety standard is from Intel. Its just been relaxed a bit due to high quality capacitors on motherboards today as well as stringent ripple tests on PSU's. Once the GPU and CPU reduce nanometers a bit lower we will once again need a new ATX PSU standard for fine tune voltage with little to no power signal noise/ripple for each chip. Intel is working to do this very same thing on their newer CPU's on a per core basis. So look for it once again that the CPU needs its own 12v rail.
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January 16, 2012 2:31:08 PM

unksol said:
all "rails" connect to one 12 volt supply. The rails each have their own (unnecessary) current limiters designed for 30 amps. to demonstrate if you added them all up you'd get 120 amps. 120 x12 = 1440 watts. way more then this supply can put out. the rail numbers are just what the limiter is set for, not actual supplies

Incorrect as each rails on his power supply cutoff limit is 40amps and the manufacture under states the rail to meet certification. IE this power supply could produce more than its max but above max it would be below 80% for bronze certification. The stated amps per rail is reliability depending up to 6 or 7 sigma manufacturing. IE the possibility of only a few not meeting the required amps. 40AMPs is this PSU's cutoff per johnny guru's review. Now all rails can't produce 30amps at the same time but 1 or even 2 could produce up to 36~40amps each before cutoff.
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January 16, 2012 11:39:50 PM

tested today with a Fluke 87 meter. voltages on all the 6 yellow leads was 12.248 volts dc very stable. Will RMA motherboard Thanks for help
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January 17, 2012 1:08:19 PM

Dennis B said:
tested today with a Fluke 87 meter. voltages on all the 6 yellow leads was 12.248 volts dc very stable. Will RMA motherboard Thanks for help

With the 650 watt not working in your machine the motherboard would be the likely cause. Good testing and if you need any help just post back in this thread. I'll see it in my forums posts which I check every day.
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January 27, 2012 3:59:16 AM

Best answer selected by Dennis B.
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January 27, 2012 9:51:54 AM

This topic has been closed by Mousemonkey
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