Garbled screen on an itx build

[ananth]

Running into issues with the screen getting garbled on my itx build.

Here are the specs for my machine:

1. ASRock H77M-ITX motherboard
2. OCZ Agility 3 AGT3-25SAT3-60G
3. 250Gb Segate sata II drive
4. 2x 2Gb CORSAIR XMS3 TR3X6G1600C8 G - This is a Triple Channel Ram - however I assumed it would be ok - shows up dual channel in CPU Z
5. core i5 2400
6. Silverstone Sgo5 case with 300 W PSU

A short video of the screen getting garbled:
http://youtu.be/ToqSNZjXOWU

Any ideas on what might be the issue? Asrock supported suggested under powered PSU unit, but I tested using KillAWatt and the system does around 60W playing hd videos off of youtube. So I skeptical if PSU is to blame.

 

[denis280]

Yes to me it looks like the psu.or a bad ground.i would change the psu

 

[oynaz]

That certainly seems like a video card issue. It needs replacement.

 

[ananth]

@denis280 thanks, I will try swapping it out.

@oynaz, I do not have a dedicated video card. It is using the i5 to power the graphics.

 

[RadiclDreamer]

Could be a bad cable, could be bad video memory, or in some cases an incorrect resolution and or frequency of refresh rate. Have you checked the refresh rate and tried another cable?

 

[oynaz]

@oynaz, I do not have a dedicated video card. It is using the i5 to power the graphics.

Then I would guess that the i5 is defective, or at least the GPU part.

It might be a bad cable as well, as RadicIDreamer wrote, or possibly bad RAM. I still think the i5 is the culprit, but the 2 others are easier to test.

 

[ananth]

Turned out to be incompatible RAM. I swapped it out for a dual channel Corsair Vengenance it worked. Should have checked that first.

Must add that ASRock support was great, they had volunteered replace the mobo even when it wasnt clear what the issue was.

Thanks you guys.