i had my hard drive replaced 1 month ago with a samsung hd403lj (400gb) my last one was faulty.
i also had my dvd drive replaced which is a lite-on dvdrw lh-20aip scsi my last one was faulty also.
thats what happens when you buy from u-mart.... lucky i got the 3year warranty
my processor is : intel core 2 6600 @ 2.40Ghz
i have 2 gig of ram which is Geil 2x 1gb sticks
asus p5b deluxe motherboard
xfx ge-force 8800 with 640mb of ram
PSU is a cooler master 650watt
that pretty much it , ihope this helps i have had the computer about 8 months and have done loads of reinstalls even a new hard drive and still the same problems persist