Morning @Cha. Diagnostically speaking, those values shown on the colorbar (3.402e^38) are the limits of Floating Point 32 or 64 bit (can't recall which?). Try limiting the range of that colorbar to an expected or known range where lidar elevations from the points exist. For example, 2,000 - 2,500 feet. If that displays pixels that resemble a DEM/DSM, then I imagine the NaN values from the lidar or those of the newly-created DEM are not recognized by ArcGIS. Try the scalebar limits route first and let me know if the DEM has data.