If you still can´t see hidden files and folder, you are infected. Solution:download smart virus remover(http://www.technize.com/download/6)run the first option (Delete autorun inf. files)then the...

Before you do anything else, try system restore, always works for me.

yo may want to check your hard drives with Hard disk sentinel, in another computer, to see if they still good for booting.

What you should do is get a program that could tell you the conditions of the drive, meaning if it's about to fail or stop working, I would think wndows 98 cannot predict when i drive is about to...