Running Windows 7 Professional SP-1 32-bit. For the past year or so, after reboot, there is a 90-second delay before the desktop appears. Meanwhile, there is a white screen with visible cursor. My system configuration and applications change frequently, and I can't specify what may have changed immediately before this behavior started. I'd appreciate some guidance on identifying/rectifying the issue.
The system runs Norton Security and MalwareBytes, and I don't believe there is any infection.