Windows 98 first edition is your problem. Windows 98 SE contains some bug fixes for bugs that exist in the original Windows 98 version.
Look for an update at microsoft.com. It's possible to apply an update that will make it turn into Windows 98 SE.
FYI, Windows 98 SE is the same as a Windows 98 SP2.
With Windows 9x based operating systems, the updates are usually NOT called "service packs" and usually, ONLY hotfixes exist for bug fixes.
Back in the Windows 95 times, Microsoft would call the bigger updates "service releases".
Microsoft usually only uses the term, "service pack" for Windows NT-based operating systems only! (Windows NT, Windows 2000 and Windows XP).