System Restoration in Windows 98:
System Restore allows you to return your computer's settings to those of a previous a date. This is useful if one of your programs becomes damaged. It is also a good way to recover if you load a program that doesn't install correctly. This is typically a last resort.
Keep in mind that you won't lose any documents or e-mails that you've received or created after the time of the restoration. However, you will lose any new programs that you've installed after the time chosen for restoration. You will need to reload those programs again. For example, let's assume that it is Wednesday. You installed a new program on Tuesday and you are restoring your computer back to its setup on Monday. You will need to reinstall the program that you loaded on Tuesday. Programs that you loaded last week won't be affected.
Click the Start button and select Shutdown from the menu.
Select the fourth option Restart in MS-DOS mode.
Click the OK button.
After your computer restarts, you will be presented with an MS-DOS prompt, as below.
At the C:\ prompt type scanreg /restore (space after scanreg, no space before restore).
Push the Enter key on your keyboard.
You will see a blue screen letting you know that it is scanning system files.
When it is finished scanning, you will be presented with the screen below.
There may be several dates from which to choose. You can use the arrows on the right to scroll down and up to see more dates. Each date represents a time your computer successfully booted up, and the .cab file contains the registry backup from that time.
Note: You won't lose any documents or e-mails that you've received or created after the time of the restoration. However, you will lose any new programs that you've installed after the time chosen for restoration. You will need to reload those programs again.
Select the last time that your computer was working correctly.
Then, click Restore to start the process. Your computer will return shortly to it's operational state of that day in the past. Or, if you've changed your mind, click Cancel.
After clicking Restore, you will see the following screen letting you know the system files are being backed up.
Then you'll see a screen letting you know the Restoration is in progress, as below.
Finally, you will see a screen letting you know that the restore was successful.
Click Restart to reboot your computer and return to Windows.
Welcome back to yesterday. Your computer has been returned to the operational status that it had back then.