I would like to apologize if this is not up to standards for the forum. Please let me know what other info I need to provide in order to help resolve this issue. This issue is really perplexing me. The hard drive just vanishes while I am using the computer. There are no error messages, or anything of that sort. I can't figure out why it is happening, and it started about 4 days ago or so. I even re-installed Windows 7 Home Premium x64 and it still not working. I have not been able to format the actual drive due to it vanishing at random times. There is no entries in the error logs and when i do a diagnostic of the drive (when it's visible) it seems fine. I have not changed my BIOS settings before it started happening, and the only software that I installed during the same timeframe was truecrypt. I highly doubt that it is causing the vanishing hard drive trick or anything like that, since I have not used it on this computer yet, and did nothing of the sort with the other computers that I have used it on. Thanks for taking the time to help if you can, or at least reading this.