1) go to Desktop
2) right-click My Computer
3) select Properties
4) go to the Hardware tab
5) click on Device Manager
6) find IDE ATA/ATAPI Controllers
7) Expand it and right-click on properties of the pri and sec IDE Controllers
8) if the drivers are manufactored by Microsoft then you have the MS IDE drivers.
If you dont or you have other IDE drivers, uninstall them and reboot, your computer should automatically search for the default drivers for the IDE, which are the MS ones...
Hope this works lol?
If zevia is correct, your discs are genuine, or at least the serial number is a genuine one...
Which TY media are you using? TYG01, 02 or 03?
If i remember correctly, the 1640 have a bit of a problem with 1 of the 3 above