Can't get past splash screen or monitor only displays noise

[FancyUltraFresh]

I was booting from an Ubuntu live USB when suddenly my PC shut itself down. After that I have been unable to boot or access the BIOS. When the PC powers on either
1) It gets stuck on the splash screen. Pressing the key to take me to the boot options or the BIOS does nothing.
2) or I see various glitchy patterns on the screen, generally two vertical stripes of multi coloured pixels at the left of the display or sometimes a rapidly flickering series of lines over the entire screen. See pictures below.

Sometimes the PC then powers itself off after a minute or so.

I get a single beep from the buzzer when I startup which normally indicates things are normal.

Attempts at diagnosing the problem:

• I have tried different display cables.
• I have tried different USB ports for the keyboard.
• I have unplugged all non-essential components.
• I've tried removing one RAM stick at a time.
• I've tried clearing the CMOS

I only have a USB keyboard (in fact a USB dongle wireless keyboard), but this has never been an issue interacting with BIOS in the past.

What's going wrong?

Edit
I'm using the onboard graphics.

Specs are:

• Gigabyte GA-Z77-D3H
• Intel i7-3770
• Corsair Vengeance 2*4GB 1600MHz DDR3
  
• OCZ ModXStream Pro

 

[bremen1874]

What graphics is it running? If it has a discrete GPU do you have onboard graphics you can try?

It's worth posting your full specs if you're asking questions like this.

 

[FancyUltraFresh]

What graphics is it running? If it has a discrete GPU do you have onboard graphics you can try?

It's worth posting your full specs if you're asking questions like this.

Thanks. I've added the specs above. I've removed my graphics card to simplify things and am only attempting to use the onboard graphics right now. So the symptoms I described are with the onboard graphics.

 

[Unseul]

Have you tried a different monitor/TV?

I'm really no expect or techie, but it seems like a sensible check?

 

[t31os]

Two things that will provide a clearer picture because you didn't outright mention them is whether the issue is the same regarding the display when you either a) connect the screen to something other than the problem PC(ie. stick it in place of a TV somewhere), or b) put the GPU back in. If you could at least see the bios screen you might have something to work with. Were it me and i'd tried A & B, i'd move it outside the case, barebones(no HDD/SSD or any additional devices aside from mouse/kb, you don't need those to reach the bios) and go from there.

 

[FancyUltraFresh]

Two things that will provide a clearer picture because you didn't outright mention them is whether the issue is the same regarding the display when you either a) connect the screen to something other than the problem PC(ie. stick it in place of a TV somewhere), or b) put the GPU back in. If you could at least see the bios screen you might have something to work with. Were it me and i'd tried A & B, i'd move it outside the case, barebones(no HDD/SSD or any additional devices aside from mouse/kb, you don't need those to reach the bios) and go from there.

Changing the display and display cable (including trying VGA instead of HDMI) did not improve things.

I did not try with the graphics card but there's no reason why the graphics card should be required to access the BIOS, which is not possible even on the occasions when the graphics are not glitching.

I already tried effectively what you suggested and removed all components other than one stick of RAM and the keyboard, but it still did not respond to my keypresses when the splash screen appeared and therefore I could still not load the BIOS.

 

[t31os]

You could try forcing the backup bios to kick in and see if that helps, google "Forcing backup BIOS on Gigabyte motherboards" (not sure if the link is ok to post here).

It might also be time to unseat the CPU cooler and checking for bent / damaged pins.

Ironically i just solved a long standing issue with that very motherboard(the old girls PC has that board), the bios would keep not holding settings(but occasionally would) when using save and exit (but would load and save profiles), out of convenience i removed the battery to clear the bios and removing then reseating the battery did reset the bios but strangely also cleared up the saving issue.

 

[EsaT]

That looks lot like either monitor or GPU issue.
So try monitor in other source. (PC/laptop etc)

BIOS battery would be unlikely to cause seuch, but at least it's cheap try.

Also you have there cheap PSU not designed to last.
Very few OCZ's had quality components and that serie has crappier capacitors than usual.
https://pcper.com/2008/12/ocz-modxstream-pro-600w-power-supply-review/4/

 

[Quartz]

That looks like a monitor issue to me. Have you tried another monitor or plugging your PC into your TV? Have you tried using a different port on the monitor?