Scrambled BIOS boot screen

Ecs (elitegroup computers... /
December 31, 2009 at 23:28:21
Specs: Windows 7 64bit Home Premium
Hey everyone,

I've just built my first PC from scratch and it went smoothly and everything seems to be running fine. I installed Windows 7 64bit Home Premium and have played HL2 and other source games as well as Unreal tournament 3 with no issues.

On boot however, the BIOS screen is scrambled and just shows blue and white horizontal lines. I read that it is most commonly the psu or bad ram timings. I don't believe it is my psu as it is brand new and there were no issues during the install. Here is my setup, and any suggestions would be greatly appreciated.

ECS Black A790GXM-AD3
AMD Phenom II X4 965 Black Ed. 3.4GHz
G.SKILL 4GB -- 2x2GB - F3-10666CL8D-4GBHK
SAPPHIRE 100283-2L Radeon HD 5770 1GB
Sunbeam PSU-COM780-BK-US 780W

Also, I just updated my BIOS to the most recent version, and the RAMs timing is 8-8-8-21, but it is set on auto to 9-9-9-24. Any attempt I've made to change it to the lower setting has stopped any video from displaying on boot until the RAM is removed. Since its current latency is higher, that shouldn't matter though, or so I thought.

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January 1, 2010 at 08:35:32
That is probably because the manufacturer has fudged the capabilities of the RAM some. You could manually set the voltage a little higher but I wouldn't go more than .10 more. What is the specified voltage and what is the current setting?

It doesn't matter. your condition is common.

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January 1, 2010 at 09:41:29
The ram is listed for 1.5V and the BIOS has automatically put it at 1.6V. If it's a common issue that doesn't effect my mobo than I'm ok with it. The PC boots snappy and access to CMOS still works properly.

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January 1, 2010 at 09:55:52
It is odd that the POST screens are scrambled. If it were my rig I would want to know why.

Did you buy a dual channel RAM kit or just order two stick of the same RAM?

Download and use SIW to read the specs of the individual RAM sticks to see if they are the same. Get SIW at the link below.

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Related Solutions

January 1, 2010 at 11:09:23
It is a dual channel kit. SIW displays both sticks as the same models with the same timings, voltage and speed. Also, the mobo manual says to put a dual channel kit in DIMM slots 3 and 4 first then in 1 and 2 (if I had four sticks), which I did.

Side note, thank you for the quick response time, I really appreciate it.

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January 1, 2010 at 11:31:37
Try underclocking the RAM and see if the same thing still happens in the POST screens. May not have anything to do with the RAM.

Disable fast boot in the BIOS and the BIOS should do a full RAM count.

Did you verify that the board and BIOS ver. you have supports the CPU and RAM?

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January 1, 2010 at 12:06:51
The RAM count is the same with quick boot off and the board and bios version support the CPU and RAM. The GSKILL RAM was not under the tested RAM listed in the manual but it is a DDR3 1333 unbuffered set of RAM which is required.

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January 1, 2010 at 12:19:33
Try a different monitor. Preferably a CRT. There are two parts to any GPU. When you first boot up the GPU runs in the low resolution mode. Maybe your monitor doesn't like that mode.

As I stated at the start. I would like to know what causes the scrambling but I wouldn't replace parts to cure it unless necessary.

Did you notice if this same problem existed before updating the BIOS?

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January 1, 2010 at 12:34:56
Yea the problem was there before the BIOS update.. but I didn't think about monitors. I have it set to display from the GFX card on boot, but it is HDMI out to my TV as I did not have enough cash on hand to order the monitor. I also just gave the two CRTs I had laying around to a fellow I know who fixes old PCs and donates them.. I will try VGA and DVI as soon as I can. Thank you for all of your help.

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January 13, 2010 at 21:45:18
Follow up after using DVI and VGA and the POST screen shows
without any issues. It must be an hdmi driver issue during boot
as a friend recently bought the same mobo and his card does
not display the POST screen at all during boot. He has an nVidia
gfx card, whilst mine is ATI. Just wanted to say thanks again
for all of the help and that the problem is solved.

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January 14, 2010 at 08:45:04
Well, the problem isn't solved but you may have rightfully come to conclude that you can't fix it.

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January 14, 2010 at 11:20:04
This is true. I have emailed the motherboard manufacturer in an
effort to make this issue known, and hope for a fix eventually.
Thanks again

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