installed rx 480, black screen. Out of ideas.

Toggle sidebar Toggle sidebar
S

sleepycharlie

Commendable
Aug 27, 2016
3
0
1,510
Motherboard: Asus Sabertooth x58
Thermaltake WR2 750w
Intel i7-950
old GPU: ASUS gtx 460 SE
replacement GPU: xfx radeon RX 480
Samsung 840, 256 GB SSD
12 Gb RAM

Hey guys. Swapped out my super old GPU (gtx 460 SE) for a xfx radeon RX 480 8 GB (RX-480P8LFLR). I see the initial startup, enter bios options, see the initial windows load screen but after that when you would see the login screen... nothing. Screen goes black. It's getting a signal just shows nothing. I've tried wiping the display drivers, starting in safe mode and installing AMD drivers, etc. My motherboard is rocking PCI express 2.0 but should still be backwards compatible correct? Only thing I haven't done is try to update the motherboard bios just because I can't find a flash drive laying around. I don't get the feeling anything is wrong physically, just some compatibility issue somewhere.. Any ideas? Thanks!
 
Solution
J
I have experienced black screens with a recently bought XFX RX480 GTR Black and it seems that it boils down to the basic PSU not rising up to the card's needs. TL DR version is insufficient AMPS.

I own a Seasonic MII 620W PSU, that has two 12V rails with 24A each. Seasonic is considered a good manufacturer and 620W should be enough for an RX 480 but it isn't. After I installed the card I immediately launched the heaven benchmark to see its potential, but after one second after starting the screen turned black and I had to hard reset. I tried a game, but it had the same result. I tried everything that I found on the internet (DDU, "x" amount of drivers, BIOS updates, reinstalling windows, upgrading to win 10), nothing worked.

Then I...
Sort by date Sort by votes
maxalge

maxalge

Champion
Ambassador
May 31, 2012
13,373
4
56,960


bios update for sure


you can also go into bios and make sure secure boot is turned off
 
Upvote 0 Downvote
S

sleepycharlie

Commendable
Aug 27, 2016
3
0
1,510
Turns out I was already on the most current version. The last update was marked as August of 2012.. Went ahead and cleared and reflashed anyway. Still getting nothing. I also realized that I'm not getting the advanced UEFI bios utility.. the GUI version, so that I can get to the advanced settings such as secure boot. Only entering the basic bios setup with limited options. Is there another step I'm missing to get there?

To recap, according to ASUS website I'm on the most current bios. Not seeing the advanced GUI BIOS, have tried uninstalling/reinstalling drivers. Getting real tired of switching cards back and forth. lol
 
Upvote 0 Downvote
J

Juravski

Commendable
Oct 20, 2016
3
0
1,520
I have experienced black screens with a recently bought XFX RX480 GTR Black and it seems that it boils down to the basic PSU not rising up to the card's needs. TL DR version is insufficient AMPS.

I own a Seasonic MII 620W PSU, that has two 12V rails with 24A each. Seasonic is considered a good manufacturer and 620W should be enough for an RX 480 but it isn't. After I installed the card I immediately launched the heaven benchmark to see its potential, but after one second after starting the screen turned black and I had to hard reset. I tried a game, but it had the same result. I tried everything that I found on the internet (DDU, "x" amount of drivers, BIOS updates, reinstalling windows, upgrading to win 10), nothing worked.

Then I decided to go at it "oldschool" and borrowed a more powerful (even though of lesser quality) High Power PSU with 700W and and a single 12V rail with 52.5A and needless to say the GPU card performed flawlessly. SInce my Seasonic has 620W and 2 rails with 24A (2x24A=48A???) it might not have been enough or the PSU has some kind of protection when the Amps that the card requires spyke.

I have come to this conclusion while observing the volts and amps listed in hwinfo64 for the gpu while the heaven benchmark was running. The watts usage never went above 130W but the Amps were all over the place with an average of 50A and spykes as high 120A (maybe this is where the PSU protection kicked in and shut off the power and the screen went black). I know it sounds unreasonably high for an amperage measurement but giving the the power issues that the RX 480 had at launch they are plausible.

My suggestion is to buy a good PSU with at least 700W and 52.5A on a single rail! I hope this helps somebody (to not waste 3 weeks troubleshooting RX480 gpu problems like I did)
 
Upvote 0 Downvote
Solution
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom