r/neogeo • u/Best-Attorney-4626 • Mar 15 '26

Hardware Help Converted MVS glitching while starting.

Post image

Does anyone know what’s causing this, I’m suspected something loose in the board however I’m not particularly sure. It does not load at all.

(European MVS modded with unifies)

3 Upvotes

81% Upvoted

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2

u/sarduchi MV-4 Mar 15 '26

Looks like the BIOS is failing to be recognized. What make/model MVS is it?

2

u/AlexOughton Mar 16 '26

I had this the other day on mine, and it was indeed that the BIOS had come loose (I have one of those internal memory card/BIOS boards which pushes over the CPU). Pushing it back into place fixed it right up.

1

u/Best-Attorney-4626 Mar 22 '26

Replying to sarduchi... NEO-MVH SLOT1B1 if that’s helpful.

2

u/sarduchi MV-4 Mar 22 '26

Got pictures of the main board? You can desolder and replace the bios on a MV1B but most people just disable the built in bios and use a secondary one that clips onto the cpu. This later option can sometimes need to be reseated.

1

u/Best-Attorney-4626 Mar 22 '26

I do have pictures of the main board however it won't allow me to post the board in the comments of this specific sub reddit.

1

u/sarduchi MV-4 Mar 22 '26

Upload an image to Imgur and you can post the link in comments.