I would definitely uninstall the drivers and software for
the scanner first. reboot the computer and press F8 when it says
Starting Windows 98 (usually when you hear the first BEEP out of your
computer). Type CD\WINDOWS\COMMAND and press enter. Then type
SCANDISK and press enter. This will run you through a full session
of scandisk. Next go to the hardware manufacturers web site that
made your scanner. Look for update drivers and software for your
particular scanner. This may be an issue that is on their web site
and they may have a fix for you.
You should run system file checker since you have Windows
98. this is located in the System Information program. It is found
under the Start button->Programs->Accessories->System
Tools->System Information. Under the Tools menu run the System
File Checker and the Registry Checker. It will fix problems in the
Registry and will check your system files for corruption. Have your
Windows 98 CD handy because if it finds any corrupt files you will need to
put it in and point the program to the CD ROM drive.
If you use us again in the future, the more detail you
give us the better. For this problem for instance it would have been
beneficial to us to know the brand of scanner you are installing.
What type of interface it uses with your PC. I see you are using a
486. You may want to verify the scanners minimum hardware
requirements. You PC may be too old for the scanner.