How to recover data from SSD in dead Lenovo Yoga700? Will not power up

Oops! I spilled water over the top of my closed Lenovo Yoga 700-11ISK, opened & dried it off, pressed the power button only to find that the power indicator was on, with the power button LED flickering — it would not turn off with subsequent depressions. It was quite some time before I was able to open the back & disconnect the battery. Leaving the back cover on but unfastened, I placed it in a shallow pan on a bed of rice and covered it with plastic wrap to try to dry whatever water got into it (this worked to revive at least two other cell phones that went swimming). I left it covered on rice for about a month before trying to connect the battery, but it had discharged. Plugged it into the charger — the power indicator came on and flashed off about every 4-5 seconds (dim power button LED — fading barely on/off). It took a charge, but the power indicator stayed on, but could not be turned off. Disconnected the battery and searched the insides for indications of water — also opened the display. I found a small (~1/2”) fuzzy mold-like area on the main board with matching area on back cover. Cleaned the moldy area with isopropyl alcohol using paper towel & stubby parts brush. This was done to no avail — power stays on & cannot be turned off with power button. Nothing else works. I would like to revive this beast, or at least retrieve my SSD contents.

Thanks,

David