How to bork Windows 98
1. Open C:\Windows\Powerpnt.ini in a text editor
2. Insert a # as 1st character in the file (before the [ )
3. Save & exit
4. Reboot
It'll then repeatably BSoD the instant it switches to graphics mode, even in Safe Mode. You'll have to boot to DOS to fix it. And, no, it's nothing to do with PowerPoint. And this file can get corrupted all by itself in exactly this way! I very nearly re-installed because of that....
Biting the hand that feeds IT
