Boot question/problem

Here's the story. I was in the process of resetting the SMC (no particular reason, just seemed like a good idea). So, I removed the battery, but I forgot to unplug the power cord. I proceeded to press the power button for 5 seconds as instructed. The laptop turned on. The display did not. The sleep light turned on. Approximately 3 seconds later, the sleep light flashed very quickly a few times. Then the computer reset itself and I heard the familiar chime/grey screen.
Everything seems normal. Almost. I can no longer boot into Vista. Also, whenever I turn on my computer, both fans are consistently running at 6000rpm and the third-party app "SMC Fan Control" is no longer able to see my fans. My Tiger installation is fully updated (as of recent).
What did I do? Is it somehow related to me being unable to boot into Vista? But, oddly enough, I can view all of my Vista files (they don't seem to be modified. My hard drive appears to be untouched by this) and when I activate my Vista partition, all I get is an infinite scrolling bar with my hard drive neither reading nor writing. So, I am forced to perform a hard shut down. Booting into safe mode also does nothing.
My hope is that, whatever I just did to my laptop can be easily undone and I can continue work tomorrow.

Here's the story. I was in the process of resetting the SMC (no particular reason, just seemed like a good idea). So, I removed the battery, but I forgot to unplug the power cord. I proceeded to press the power button for 5 seconds as instructed. The laptop turned on. The display did not. The sleep light turned on. Approximately 3 seconds later, the sleep light flashed very quickly a few times. Then the computer reset itself and I heard the familiar chime/grey screen.
Everything seems normal. Almost. I can no longer boot into Vista. Also, whenever I turn on my computer, both fans are consistently running at 6000rpm and the third-party app "SMC Fan Control" is no longer able to see my fans. My Tiger installation is fully updated (as of recent).
What did I do? Is it somehow related to me being unable to boot into Vista? But, oddly enough, I can view all of my Vista files (they don't seem to be modified. My hard drive appears to be untouched by this) and when I activate my Vista partition, all I get is an infinite scrolling bar with my hard drive neither reading nor writing. So, I am forced to perform a hard shut down. Booting into safe mode also does nothing.
My hope is that, whatever I just did to my laptop can be easily undone and I can continue work tomorrow.

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    I think it is the HDD as the original 1TB hdd drive with windows 7 installed would freeze up at random (during boot or general use).
    It would also not let me install windows 8(it wouldnt get past the setting up screen).
    I then decided to put in another 500gb HDD out of an old media player I had.
    It worked, I could install windows 8 and no random freezing until tonight.
    After not using the PC for about a week I turned it on and it showed a boot error "No boot device detected".
    I have since re started it and it booted in to windows only to freeze up again.
    Before the freeze I managed to open task manager to check the performance, I seen that it was using 100% of the HDD.
    as it is still a fresh installation of windows I have very few processes running.
    I dont know if it is a HDD or a fault on the motherboard.
    I ran a diagnostic test from the BIOS, the cpu passed so did the ram but the HDD failed, the error was that the HDD was not connected.
    I did hear the HDD working through.
    Also after the test ran the PC froze again, so I restarted and ran the bios again the same results showed up, I then restarted again and it started to load windows then froze again.
    I then moved a 2 TB HDD from another All in one PC to the troubled PC and it froze up almost right after turning the PC on.
    I then popped the 500gig HDD from the troubled PC in to the other PC and it booted straight into windows with no problem.
    There is a SATA cable from the HDD to the MoBo, I took the one from the working pc and put it in the troubled pc just to rule out the cable, it still failed the HDD test and froze. 
    So I plugged the HDD cable into the CDROM SATA input and restarted, although it would still get boot error the HDD would pass diagnostics test but would not boot windows it would just go into recovery but still with random freezing.
    I Tried to Boot Herin's boot disk but it froze.
    Just seems to be freezing randomly now, I just dont know what to do it what it could be anymore.
    UPDATE: I have just turned the computer on 3 time and ran diagnostics 3 times and everytime the HDD pass BUT everytime the pc froze.
    Also I tried to reinstall windows and yes yet again it froze.
    This question was solved.
    View Solution.

    Hello,
    I have read your post on how your HDD boots with an error, passes all the tests, and I would be happy to assist you!
    The first step I recommend is to follow this document on Restoring the BIOS. This should help how your computer will boot from the HDD. In addition, I also suggest replacing the SATA cable connecting your HDD to your motherboard. To do this, please follow this document on How to Remove SATA cable.
    If the issue persists, please call our technical support at 1-800-474-6836. If you live outside the US/Canada Region please click the link below to get the support number for your region.
    http://www.hp.com/cgi-bin/hpsupport/index.pl
    I hope this helps!
    Best Regards  
    MechPilot
    I work on behalf of HP
    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

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