While you sort a new motherboard out, get testing that SSD out. If you think the SSD has got liquid of some sort on it, maybe upload a photo or two of the drive for us to check.
If you have neat isopropyl alcohol, use that and a soft brush to try and clean the drive up. Electrical contact cleaner will work too, it just depends what you have to hand. Don't be afraid to give the drive a good wash with either of these, they'll soon evaporate if you place them somewhere warm (not hot).
With the SSD being suspect, I'd test it in a USB enclosure if you can. This way at least the drive should only be able to take out the enclosure. Failing that, try it in a motherboard. As long as you've cleaned up the liquid with alcohol or contact cleaner, you should be okay.