Unfortunately I still can't build my new computer. I'm beginning to get very concerned. I've had one hard drive on me, and now I'm worried that my 200g primary drive is kicking the bucket as well. Typically the first time I power on my computer in the day, I get an error message stating that my Primary drive has failed. If I try to continue booting, I get a message stating invalid boot disk. If I power off my system and power it back on, it works like a champ no problems. It's only on the initial boot. Furthermore, I know it is at least being detected properly because even when I get the error message I see that it's picking up the make and model of the drive in the boot log.. So are there any applications or anything I can use to check the disk?