perhaps its time to change your hd,how many years do you have it working,better often old hd's tend to get stuck by the needle on the disk internally.
asus p5q pro turbo/q6600 @ 3.4 ghz 24/7/asus silent knight II/
8 gb ocz sli edition/wd green 1 tb/seagate barracuda 250 gb/
antec 300/ gtx 280 @ 690 mhz/1572mhz/1300mhz,
apevia iceberg 680 watts/lite on dvd r/lite on cd r.
Os installed thru USB flash drive and drive is set in the boot priority. At the moment this is the only drive connected so that no others issues arise. Additionally, come to find out the drive works because I pluged it onto another machine loaded OS and no problem booting. Now it may lead to something with the MB. Any inputs would be helpfule
I also have the GIGABYTE GA-P35-DS3L mobo and am experiencing the same problem with my IDE hard drive. I also figured it was an MBR problem, but despite repair attempts failed. I tried wiping the disk and installing ubuntu (the machine boots from USB fine) but the problem remains.
I came across an individual experiencing the same issue on a yahoo help forum, and it would seem that he fixed the problem by removing the mobo from the case... I haven't tried this yet, as it hardly seems like a viable long-term fix, but I'm yet to see any alternatives.
Could this be an idiosyncrasy of the mobo with certain IDE drives?