Clarification/Follow-up by fredg on 11/02/05 4:35 am:
HI,
Since you told me it's Win98, here are some maintenance steps for 98. If you are already doing them, I apologize in advance. I know you can do the Scandisk and Defrag, so I will only include a couple of other tips:
Registry Repair should be done whenever there are problems:

To Repair the Registery:
Turn off the computer; or reboot; then immediately press F8, (or, could be F5) located on top of the keyboard. Keep it press down until an options window comes up, then release it.
(If F8 or F5 doesn't work, then re-boot, and immediately press down the CTRL key, hold down until it comes up to the options screen).
Use the up and down arrow keys on the keyboard to select "Command Prompt Only".
Press Enter
You will now see C:>
Type in SCANREG /FIX (there is a space between the G and the / ).
You will now see C:>SCANREG /FIX
Press Enter
This will take about 5 minutes or so.
when finished, press Enter for OK.
Manually, turn off the computer, wait a few seconds, the turn it back on.
If you don't have the "Command Prompt Only" option, then re-boot the computer normally.
Go to Start/ShutDown, then choose "restart in ms-dos mode".
It will come up to C:windows.
Type in CD C:
It will look like C:>windows CD C:
Press Enter.
It will then be at the C:> prompt.
Then type in SCANREG /FIX
Press Enter
When it returns to the C:> prompt, then manually turn off the computer, and turn it back on.
I do wish you the best,
fredg