Hi,\n\nMy sister is having problems with her computer. The following is how she\ndescribed them to me. Perhaps someone has an explanation for this problem.\n\nShe had problems with it last month and took it into a computer shop to get\nrepaired. (I believe she got struck with a virus.) Anyway, they fixed\nthings and installed McAfee on her machine. She was using it at home with\nno problem. Then she downloaded an update to McAfee. During the install,\nshe got a fatal exception error (Windows 98SE, if you were wondering about\nthe OS). When she went to restart the computer, it gave her a message like,\n"Operating system not found on hard drive."\n\nDoes anyone have a clue on what could have caused this?