[HayZee518]

If the battery won't charge, then the problem lies in the charging circuit of the laptop. You've changed the dc input so the inter-connect isn't at fault. I've had a compaq laptop all apart and managed to get it all back together and working, but that toshiba is a real pain. Inside the laptop is a circuit that is probably a step down transformer and a bridge rectifier circuit that changes the AC to DC for use with the computer AND charging the battery. But then after thinking, the rectifier should be ok because the thing runs off the external cord - so that leaves the battery jack inside to the battery. the connection between the battery compartment and the rest of the machine - check for an open path to the machine from the battery jack.