Well if the Lexmark was the last thing installed, uninstall it & see if the crashes go away.


As far as your CD's, see if this applies.

Unable to Access CD-ROM Drive After Installing Windows 98/Me
<http://support.microsoft.com/default.aspx?scid=kb;EN-US;189526>

SYMPTOMS

After you install Windows 98 or Windows Millennium Edition (Me), you may be unable to access your CD-ROM drive.

CAUSE

This behavior can occur if you have a dual-channel integrated device electronics (IDE) controller installed in your computer.

RESOLUTION

To work around this behavior, follow these steps:

1. Click Start, point to Settings, click Control Panel, and then double-click System.
2. Click the Device Manager tab.
3. Click the Hard Disk Controllers branch to expand it, click your IDE controller, and then click Properties.
4. Click the Settings tab.
5. In the Dual IDE Channel Settings box, click Both IDE Channels Enabled, and then click OK.
6. Click OK, and then restart your computer.
7. Test to determine if the issue is resolved by trying to use your CD-ROM drive. If the issue is not resolved in Windows 98, perform the troubleshooting steps in the following article by clicking the article number below to view the article in the Microsoft Knowledge Base:

190303 How to Use Real-Mode CD-ROM Drivers from Windows 98 Startup Disk