Toshiba Tecra 9100 problems

My Tecra 9100 will not charge the battery. The charge indicator glows
amber for a couple of hours and then the light goes out. The software
power indicator always shows a charge of 15% but the unit will not
operate from batteries. AC power works fine and computer operates
normally. Is this a motherboard problem? Also 2 other strange
problems. No sound from speaker or headphones. No modem. Windows
device manager shows both devices as working properly and sound meters
show files playing. Modem diagnostics state port cannot be be
accessed. No conflicts show up and I'm using newest drivers from
Toshiba. Is the charging thing related to the mobo flexing problem
Toshiba had on this model. Would poor solder connections cause the
other 2 device problems.