First, my specs
Windows 7 Pro 64bit
Antec 80Plus 650Watt EarthWatts
Raidmax Smilodon Case
AMD Phenom II X4 955 BE
XFX Radeon 4870 1gb DDR5
SAMSUNG Spinpoint F3 HD502HJ 500GB 7200 RPM SATA 3.0Gb/s 3.5
MSI NF980-G65 AM3 NVIDIA nForce 980a SLI HDMI ATX AMD Motherboard
4gig Kingston 1336 1.5v gaming series ram
Running good since november.
So yesterday my computer started freezing and I would restart. Maybe happen three times. Today I tried to turn on my computer only to have it sit on Starting windows indefinitly. I tried several times, once in a while it would go past starting windows to a black screen with no desktop or applications running(but I could access task manager). I got this result maybe 1 out of 10 restarts.
I used a recovery disk that seemed to get past the "vista-looking" loading bar about half the time.
I used a recovery disk that said my system should boot okay. I tried it and same result as before.
I used system restore from recovery disk as far back as I could which was only about a month before a "critical" update. It started an ran for about an hour before it froze and went back into the broken cycle.
I tried reinstalling windows 7 using my upgrade I bought and got "no operating system found error".
I borrowed a friends win7 64bit install cd and it gave me a cd/dvd driver not found error and I could not continue.
I tried installing my old vista and it sat on the loading screen indefinitly.
I booted in linux by flash drive to see if my hard drive had failed and it reported that it was in good working order.
What exactly did you use to determine the status of the hard drive? Have you run a chkdsk? Have you enabled SMART? Your drive's manufacturer should have free tools to download to check your hard drive to make sure it is in fact ok. It does sound like a bad hard drive to me.