Error Signature in Windows XP

Hello i have dell inspiron 4100 with 2 pcmcia (1) for LAN and (1) 56k modem. Once i remove the 56k modem it generate an error and restart the computer. Error says:

Error Signature
BCCode: d1 BCP1:20202024 BCP:0000002 BCP3:00001
BCP4:F65F65F1 OSVer:%_1_2600 SP:0_0 Product:768_1

Any ideas?