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RX Vega 64 loss of signal problem.

Soldato
Joined
20 Mar 2004
Posts
4,574
I built a new PC recently but I've been having problems.

Here's the build.
AMD Ryzen 7 Eight Core 2700X 4.35GHz (Socket AM4) Processor
Samsung SSD 850 Evo 1TB
Toshiba 2TB P300 7200RPM Performance Hard Drive (HDWD120UZSVA)
MSI Optix G24C 24" 1920x1080 VA FREESYNC 144Hz 1ms Curved Widescreen Gaming Monitor
OcUK Value Blu-ray / DVDRW combi SATA
Phanteks Enthoo Pro M Glass Midi Tower Case
Bitfenix Formula Series 750W 80 Plus Gold Power Supply
Alpenfohn Ben Nevis Advanced CPU Cooler - 130mm
Gigabyte Aorus RGB 16GB (2x8GB) DDR4 PC4-25600C16 3200MHz Dual/Quad Channel Kit
Gigabyte Radeon RX VEGA 64 WindForce OC 8GB HBM2 PCI-Express Graphics Card
Gigabyte Aorus GA-AX370-Gaming K7 AMD X370 (Socket AM4) DDR4 ATX Motherboard

Everything other then the SSD is brand new, which come from my old build.

I've had problems from the start, to begin with the machine would turn itself off whenever I ran a game, but in the end I plugged in 2 different PCIe plugs instead of using a daisy chain off 1 rail, which solved the problem.

But afterwards, very rarely, my monitor would lose signal, sometimes after 10 seconds the picture would come back, other times the fans would absolutely take off and the picture would stay off, causing me to turn off the PC.

I made sure all my drivers and BIOS, motherboard and GPU, were up to date, but the problem kept happening, I even tried undervolting the GPU to see if that helped.

Last night I had 2 black screen within 30 minutes, 1st time, the picture come back, 2nd time it didn't. I noticed I was using the beta/optional radeon drivers, so I uninstalled them and put on the tried and tested version, which seemed to be going well until earlier today.

I decided to install Dark Souls 1 with the DSfix, worked fine for about an hour then I got a blue screen error, believe it was driver_irql. Didn't think much of it, just put it down to bad DSfix settings.
Reset the machine and tried Tomb Raider, got a blue screen within 2 minutes, reset machine, got another blue screen within a minute, doing nothing on the desktop. This happened several times.

I then went into safe mode to uninstall the radeon drivers, but the uninstaller did nothing, it just sat there, I increased the screen resolution while this was going on and I got another blue screen. Long story short, I got several blue screens in safe mode.

By now I've had enough and I just want to wipe the machine and reinstall Windows, I insert my USB installer and as soon as it tries to load Windows, I get more blue screens.

Last thing I do is go into the BIOS and do a factory reset, now everything works and I'm able to install Windows, which is where I am at the moment.
I've not changed much in my BIOS, the only thing I did change was to enable XMP. I don't know much about XMP but I was advised to enable it when I built my machine.

After all this, the PC worked fine for about 4 days without a fault, then I had 3 black screens, but they've not lasted as long as the other black screens and they havn't resulted in crashes.

I've asked on the AMD forums, it was suggested that I up the power limit to +50%, which I've done.
It worked for 2 days but I had another black screen tonight, but thankfully no crash.

Can anyone give suggestions on how to locate and fix this fault?
 
Says pre-order only.
What do you think the chances are or OCuk, letting me buy the card, then when it arrives, send the other back for a refund?

I don't have a laptops or anything like that, so without this PC I'm stuck on my phone.
 
I replaced the displayport cable on Sunday, but my problems continue.

Playing a game tonight, I got the usual black screen, but instead of the picture coming back, the screen slowly went blue/white.
RdP7UT4.jpg

Once I turned the monitor off then on again, it started working.
 
I bought a Super Flower 850W and installed it yesterday.
I had a bit of a wierd moment in BFV last night, but I assumed that was because I was playing around with the settings. Then today I got a black screen for a few seconds while playing Minecraft. :(
 
Have you tried it with FreeSync off ? (if you have it on), as its a major problem with FreeSync, the Black Screens, as well as flickering.

Thanks, I have been using FreeSync. I'm using my old 970 for a few days to see if the problem happens, but once I put my Vega back in, I'll try it with FreeSync off.

Regarding the coil whine, is this something to be concerned about?
 
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