|"Could it possibly be my motherboard?"|
More likely to be in the bios, google your motherboard to see if it will handle the 320mb HD. Probably needs some special attention.
This will give you your MB model.
I use SIW for Licenses & Passwords.
1: Left hand column. Software > Licenses.
2: Software > Passwords
3: Top bar. Tools > Win 9x Password Cracker.
The Freeware SIW is a Read-Only / Display-Only System Information tool that gathers detailed information about your system properties and settings. A standalone tool that does not require installation.
A utility that includes detailed specs for Motherboard, BIOS, CPU, Devices, Memory, Video, Drivers, Ports, Printers.
It displays information about Operating System, Installed Programs, Processes, Services, Serial Numbers, Users, Open Files, System uptime, Users, Network, Network Shares, and more, as well as real-time monitors for CPU, Memory, PageFile usage and network traffic.
SIW also displays currently active network connections, Passwords hidden behind asterisks, installed codecs, and more.