Hi,
sidsrvnn, and welcome to the forums.
For the System Interrupt Controller, I'd look around to see if you are missing some critical (or non critical)
drivers from Gigabyte for the motherboard....it may not have actually installed all
drivers if you ran it off the CD, so download the
drivers from GigaByte's website.
As for the HD issue, I know the answer for that right now - I use a pair of 'Cudas (500 GB 32MB Cache, the 7200.11 drives) and had the same problem - see
http://www.sevenforums.com/general-d...html#post10171 - that should solve your low WEI disk score *and* performance issues.