Follow these steps:
* Open Run Command –> Start –>RUN
* Type SYSEDIT.EXE
This will open system editor window
* Expand the system.ini file window.
* Scroll down almost to the end of the file till you find a line called [386enh].
* Press Enter to make one blank line, and in that line type
Irq14=4096
Note: This line IS CASE SENSITIVE!
* Click on the File menu, then choose Save.
* Close SYSEDIT and reboot your computer
Done. Speed improvement will be noticed after the computer reboots.