Black screen, capital accented N and a green block - Gigabyte GA-MA790X-UD3P

[Dark Mantis]

It might not show up as a USB drive. Don't worry about that as long as you can find it. Try again.

[Cyclocius]

It seems to me you don't have enough power to start the video card anymore. If your power supply was close to the minimum required and/or you use adapters for the 6-pin and 8-pin PCI-Express connectors, the power supply may be inadequate. Running the power supply at maximum output for extended periods of time can shorten its life. I don't see any reason to update the BIOS in order to run a HD 3850x2.

HD 3850x2
Power Requirements:
Minimum 550 watt power supply both a 6-pin and 8-pin PCI-Express connection

 I have a 600w PSU, wouldn't I know if my PSU had cut out via a more physical means? Like smoke or burning or something.
And Mantis, there's only the Floppy Disk listed and that's empty.

[Dark Mantis]

Check the USB files on the other computer first to make sure they are all there. It is often picked up as either a floppy or hard disk drive.
Your PSU should be enough for what you are running but if it is old it could have degraded and be giving out less power.

[Cyclocius]

 My PSU arrived on March 1st, I don't see how it could have degraded so much in 5 months...
And the files are all on the USB, it's still an exe, but my USB stick is formatted as FAT32.

[Dark Mantis]

What make is your PSU just to clear this up?
I will check out the file download and see if you have got the right file. Back soon.

Yes  I have just checked and it is an .exe file. Right in that case you wont be able to use it on the Q-Flash program.

[Cyclocius]

I'm using an OCZ 600W Stealth Xtreme.
Man I love computer names, makes us all seem so mature 

[Dark Mantis]

Your PSU should be perfectly powerful enough.

[Cyclocius]

 That was my belief.

[Dark Mantis]

I have just been taking a look at the BIOS update files and I believe that I was right at first and the .exe file is for the @bios utility not Q-Flash so it weill not work with that. This is probably why you cannot see it on the drive.

[Cyclocius]

 So your recommendation would be...? I don't want to have to reformat again 

[Dark Mantis]

I am just readinhg up on it because it says some boards do not come with the Q-Flash utility. So I must now see if yours is one of those boards.

[Cyclocius]

 My board has Q-flash on it, it's in the manual and I can access it, but it refuses to show my USB stick.

[Dark Mantis]

Yes that's what I can confirm. However it isn't usually an .exe file that is for download. They are usually for the @bios windows update tool for the bios and it can be very dangerous to use. My dilemma is that I can't find the expected file for the Q-Flash update and I don't want to use the Windows based program. If you want to check up on page 64 of your manual it explains.

[Cyclocius]

 All this talk about the BIOS is scary. It's always downloaded an exe though, I didn't click or change any settings while downloading,

[Dark Mantis]

No I know that I even tried downloading it myself to see.
OK good news all sorted. I jhust checked with my board and it has an .exe file for update also.