Both are running Windows 10 (Pro on the desktop, Home on the laptop), Version 21H1, build 19043.1288. Laptop computer: similar vintage Dell Inspiron 15R 5537, gen 4 mobile Intel i7 CPU (2 cores, 4 threads 1.8 GHz), 12 GB RAM, 'I TB' HDD. Desktop computer: Dell XPS 8700, mfr date, gen 4 Intel i7 CPU (4 cores, 8 threads 3.60 GHz), 16 GB RAM, NVIDIA graphics w/ 4 GB RAM, 'I TB' HDD.