Does the silver power slider button feel especially friction-free? Those plastic buttons are NOTORIOUS for breaking tiny tab inside that slides motherboard power-on switch. No tab, no power-up, period. Take a micro-screwdriver and carefully pry up button from thinnest bottom edge. Just enough to pull away, not fly off! Then use stylus tip to push tiny exposed lever deep inside momentarily downward. With luck, boot will proceed.
100% Old School tablet setup:
Sahara i440D - 4GB/500GB/7200 - Vista screams!
HP TC1100 1.2 - 2GB/160GB/5400 - Vista - portrait - primary computer.
HP TC1100 1.2 - 2GB/160GB/5400 - Vista - primary work computer.
HP TC1100 1.0 - 2GB/60GB/7200 - XP - laptop - partner's primary computer.
Acer 303xmi 1.6 - 2GB/100GB/7200 - Vista - laptop - work computer.
Motion M1300 1.0 - 2GB/60GB/7200 - Vista - semi-retired (needs repair).
Motion M1300 - for parts.
Motion M1400VA - awaiting resurrection.