bubbiesmommie try this. Hold Windows key and tap x to get into device manager.
Click on batteries
Right click and delete the battery
Reboot, the system should "find" and "re-install" the battery.
Then plug it is and see if it charges.
If it does not, then you definitely want to try a new cable and a different charger. If even those things don't work, then you'll have to disassemble your T100 and take a look at the actual charging port and ensure that it is properly soldered on the board etc.