Yea, it took me 5 days to manage to actually boot from pure DOS, making a bootable CD, where my drive would be detected (not even setting the SATA port to IDE in BIOS worked), and had to use a PS2 keyboard, my USB wouldn't work, even tho I have it enabled in the mobo BIOS. Oh, and I don't have a thumb drive, except a mp3 flash player, but I can't create a DOS start-up disk with it. Anyway, I'm writing here just to comment that even tho I modified the FAN settings in BIOS (only Tmin, from 58 to 50, and the minimum duty cycle from 0 to 10%), these modifications gave no result. The fan is still lazy, as in going to let's say 18% at 63c where the slope in BIOS said at 63c it should be 33%. I did not changed anything for hysterisis or PWM. P.S. Is MS-DOS that a floppy disk gets when formated a real DOS as you put it BAGZZlash? What classify DOS as REAL DOS? P.S.2 How on earth when I used Caldera DOS, I was able to see my NTFS partitions? I was totally sure DOS does not see NTFS, only FAT.