🚀 go-pugleaf

The parity error occurs when one bit (or odd number of bits) in a byte 
change its condition(0 to 1, or 1 to 0). At the computer power on, the
POST(Power-On-Self-Test) will clear all of your memory to zero). You know,
the memory(DRAM) is a capacitor, so it tends to change from 1 to 0(because of
discharging), not 0 to 1. When you not running your application, the memory
still remain 0, and it almost impossible to change to 1, so no parity error occures.

But when you running Windows. Windows use all of your available memory. If your program use this BAD memory area(the bit of memory discharge faster than otyour
program use the bad chip of memory(the bit of chip discharge faster than others)
and the bit is 1, then the bit may become 0 randomly, then parity error occur.
* Hope you understand what I say *

So, run QAPLUS or other diagnostic software to check your RAM.

2. MSCDEX ---- Microsoft CD-ROM driver is free if you buy one CD-ROM.
Call for your dealer to get the driver.