PDA Casio BE-300

Happy New Year, to all. Good morning! My son gave me a Casio BE-300, for Christmas. Tried to contact the manufacturer with a problem, but, did not an answer, so, sorry for bugging you guys with situation: When connected the PDA to the PC, via USB cable, supplied by Casio, Windows XP Pro. crashes, had to reboot PC. Disconneced it, had not a problem since. Question, that you have any ideas why is causing the OS to chrash? This is personal PC or Home. Not related to Job.
Thank you in advance. Maythe New Year finds you healthy, full of love and peace. God Blesses all.