Athlonite: try any of these https://downloadcenter.intel.com/download/24293 or go with the one listed on your mobos website here http://www.gigabyte.co.nz/products/product-page.aspx?pid=3764#dl

richms: I would just replace motherboard and CPU/ram if it is suspected of corrupting data.

Drivers dont cause it. I have had machines running bog standard windows drivers on a core 2 quad vintage machine that has probably transfered exabytes between drives as I have moved things around. Thats internal sata, esata, USB2.0 and pcie card esata to a storage enclosure. All on a fresh install of 7 with just windows updates and I think the esata PCIe card driver from the silicon image website.

Think I have had a couple of occasions where I have had files corrupt and it was a read error off a HDD that was quickly picked up when I rechecked the torrent files.

For the number of errors you are having, something is wrong. If there is that much reading or writing improperly I would expect frequent bluescreens etc as well.

Bin the hardware, get an equivilant machine ex lease or replace it with current stuff and then problems should stop. Drivers are a red-herring. They may help with performance but there is no way that anyone would ship hardware that corrupts files on a stock installation.

gbwelly: TL;DR sorry if you've already ruled this out but..

Are you running any A/V? perhaps it's at fault.