VEGA 64 - not recognized fans not spinning!

Sorry a little confused still. So are you saying that all cards work in slot 1 by themselves, but don't work in slot 2 or 3 by themselves?

If that is the case maybe it is a motherboard issue? That or something really messed up with chipset driver. You could try and boot from a ubuntu usb drive or dvd with one card and see if that works. If so you rule out hardware and at least know it is something in Windows or the drivers. Have you also run this issue by Asus support?

Your power supply is insufficient for cards which can pull over 350w each, so be glad they're not working. If it's not detected in slot 2, then it's a problem with your motherboard.

I passed this along to Amd Matt here is what he had to say,

amdmatt

Sounds like a Motherboard compatibility issue with a new GPU such as Vega. Not much we can do, customer should report it to Asus to see if they can help. However, X79 is a very old chipset so they are unlikely to release an updated bios.

Check you PSU is rated to run the vega as you need alot of juice to run the vegas. To me sounds lack of power to not spin up the new card its not the motherboard. I had issues with 10 creators update for a bit till now sorted running stable. My advise is test your PSU As you want something that's way over recommended wattage for a buffer for any OC. A leason learnt ruuning AMD cards need a decent PSU & make sure your wattage is way over your recommended wattage.

Done use driver tools like the tool you were using as it loads up alot of junk. Your better off to do a fresh 10 Boot on ssd using the media creation tool & update your drivers threw device manager as you will get the correct & best drivers run you system till its updated, power down try again tho i say could be PSU not giving you card enough juice to spin up.

I had a simular issue running my H61 motherboard build with my i5 2400 ran stable for the first month the creators update screwd my hard drive. Got it running on ssd for about 3 days stable on latest driver then after shut down wouldn't boot past post screen tho i had alot tell me it was hardware. Funny enough tho i had a power run before it went down proving my point it wasn't hardware. I sent a heap of picks to my old IT tech to show the results before it went down & run a hard ware checking tool which showed my build was running prety good for its age. After another week being down i threw a bigger PSU with a down graded driver sorted my issue atm with a stable run time of 4 days with a few shutdowns fank god on that. An idea which i did was i ended up running on cpu videocard for a few days with !0 creators update running with cc cleaner for registry cleaning & dumping old windows & driver installs off my ssd. I ran with my videocard still in powered up till i i thought why not give it a shot & found that 10 was throttling the power down from the PSU so my videocard wouldn't fire up. 600w with  rx560 OC 4G atm is running smooth, considering i was told was a faulty videocard faulty hardware. Advise is even buy a PSU as you will need 1 if you are forced to build a new build as PSU dont last & loose effecientcy as they get older. Switch ram PSU is the easiest way to eliminate a few issues on the spot i had 2 builds go down 1 on a nvidia based build & my build. Any help i can give i will as new to AMD tho a few things i have found or learnt has helped so far. & i havnt done a bios update either that shouldn't matter some builds it does but not always the case tho with you build i would advise to do a bios update but not the lastest go for the 1 before the lastest

how many watts is the psu & how old is it should be but a good idea is check on the side of the psu for recommended power draw volts & amps that's as important from what i have learnt with AMD cards

still advise to go bigger to a 750w psu + better chance as it degrades over time to get a constant 600w its how i buy my psu's as the older they get they lose efficientcy & degrade over time as well learnt & found with AMD cards they need a decent psu to fire up properly to run stable. I am on a Antec psu atm 600w without problems should have been using it when i first booted my build.

yeah 1200w be more than ample. Its a lesson learnt running AMD cards atm run way over the wattage. He needs to find a good brand PSU & try again. It should run happy thinkning his issues is hes running out of power to run the vega properly.

Calcite,

Before going crazy on super expensive PS. You still want to make sure that is the issue. If you have another power supply or can get one, a smaller one just to test with. You could use it to just power the second card to make sure it is a power issue.

test the card in a m8s pc with a simular build to elimate the problems to. I ended up doing that with my stepsons build to eliminate hardware. tho i build a few PCs from time to time i was lucky i was rebuilding my stepsons that went down so had a 2nd clean build to work with. Mine had been down for a week or so before i found my issue which i found was driver related. I found in the MS 10 creators update the power settings have been trottled back so i ended up opening up my power settings to full power made a huge diffrence got my rx 560 OC 4G idling properly. Even on older drivers stable atm tho i am waiting a week or 2 before i re update my drivers so i know i have eleimated my issues. Tho i am going to solve my problem more buy buying a better Bigger & better PSU as running an Antec 600w PSU that's 18months old. PSU's dont last like they use to & degrade over time the older they get i updgrade PSU in a cycle of 2-3 years now as a lot are made in china with less superior products & they are cheap enough to replace in a 2-3 year cycle gives a good buff as well for an older build especially with the hit of miss updates around to atm. Just a lesson learnt & i run ssds now of good quality & only run the OS on to eliminate bugged driver or OS updates which has been a current issue i have found lately. I found hit or miss with creators update. I have run & hardware scan over mine last night i live in NZ & for my age of my build & my build everything is registering really well or better than systems for it age. But i am monitoring it for a while to maek sure i got rid tho pesky gremlins around atm. Tho i have an identical build just next gen processor on ssd with fresh creators update ready to go to make sure, as i found driver wise between Nvidia & AMD are both iffy coz of the creators update atm. Tho i dont bother with power saving modes as i pay my power bill & on unlimited internet & buy bigger than needed psu's to elimante downtime & to allow for deteriation of age of power supplys i rather go over the watts saves rebuilding in 6months or running into issues just i keep an eye on age of my psu's & if i notice that they are not running as good run a hardware check & switch out before they die. I had a simular PSu to mines that's running another Antec die in 18months bought at the same time, its why i say buy a good brand & why i rather shell out on a new psu earlier than i got to can alkways sell the older psu 2nd hand to some1 building a cheap rig.

hmm its 50/50 you got anything else to test the psu on most motherboards should be vega capible end of the day its videocard. Test you vega with psu in a m8s build might be best way to eliminate a issue or 2

Have you re tried your older videocards again to eleiminate its your motherboard. The best way i do to elimininate an issue i use is to fire up without a card. Run off motherboard integrated cpu for a day or 2 just so windows 10 stabilises. I found 10 runs prety unstable after a fresh install on the creators update so i try run without videocard for a day or 2 before i try with videocards. I had this issue with mine so i left it out for a day or 2, same as my stepsons Ivy bridge i5 build i just redone just got his running stable for 1 day + before i refired up his videocard. Took about 24hrs b4 running properly i found between bother builds to eventually stablise with out the OS hang which the creators update has a tendancy to do. I prety much built 2 H61 builds mine is a i5 2400 on 8gig ram with 600w psu & Sapphire pulse rx560 OC 4G & was told my hardware was an issue that i had a dud card. Funny thing was its running silky smooth & stable nearly 5 days on older AMD drivers from early Dec with 10Pro upto date, & was having issues trying post past bios to first windows login. I dont use those driver tools for drivers & software as half the time you end up loading up the wrong drivers. I use the device manger & when i check my drivers use the 2nd option where drivers are stored to your system as windows installs a few sets of drivers & doesn't always install the proper chipset drivers why i manually check in device manager as i have google or edge or another computer or phone in the background with the codes so i know which drivers are meant to be installed. I had this problem with my build & my 2nd ivy bridge i5 i re fired up took me about an hr or 2 but both builds are running stable now & thats on a 660gtx 2G & Nvidia drivers are more ugly than AMD drivers atm. The only way i can think may work is try the card in some1 elses build to make sure its not the card or any of your hardware or do a fresh boot with card powered in place & see if it posts if it does try boot to safe mode might be an idea & run DDU. As if the card is working should still post without drivers installed to basic video settings mine did which how i eleimanted was hardware. Any videocard installed with other drivers on a fresh build getting enough power still should post. Otherwise its hardware or may be card or Motherboard fault. I would suggest tho test your card in another build & retest any cards you got lying round in your again. Even drop back a bios revision might be throwing issues. Tho if your running uefi it SHOULD automatically reconise any cards added. Depends where in the world you are to i am from NZ so avaliblity to good pc parts it not as good tho for the first time in many years we have been getting some decnt stuff come in which you pay big $ for.