A faulty drive doesn't give off NTFS permissions errors, it gives much worse.
If the disk is corrupt or faulty? Have you run a surface scan in safe mode (the reason I say safe mode is its less likely to interrupt the scan by something trying to open files). Like SirSquid said, the log would be full of potential red flags.
Have you tried logging in as the "administrator" account and manually flushed/reset all the NTFS permissions?
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Jen
Gaming Rig: Intel i7-3770K Ivy Bridge, 16GB DDR3 RAM, 120G Intel 330SSD, Asus GTX760 and Asus P8Z-77V-Pro
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