When you start the system, before windows could boot, press the F8 key repeatedly to go to the safe mode. Some times it might be necessary for an administrative password to login or enter safe mode.
There are a lot of difference in between normal booting and booting in safe mode.
When in Safe Mode, autoexec.bat or config.sys files are not run.
Safe Mode uses standard VGA graphics mode.
Windows boots using a batch file called system.cb instead of the standard system.ini file.
The desktop, loads in 16 bit colors and always with a resolution of 640x480 pixels.