Can't load Windows Vista!

I can't get into my OS -- please help!



Never had this problem before on my 2-year-old Asus M50Vm laptop. Suddenly Windows Vista crashed, for no apparent reason, and I couldn't even get the Task Manager when I pressed Control-Alt-Delete. So, I manually shut down the computer by pressing the on/off button.



Now I can't get back into Windows Vista. If I try loading normally, it stays stuck on the windows loading screen (with the bar). The hard drive light is active, and then it suddenly goes black, and the HD makes a similar noise as when I put the computer to sleep. It will either stay that way indefinitely (with the windows loading screen), or restart on its own.



If I start via the various safe mode options, it loads files up to crcdisk.sys (it's the last one it shows loaded) and then it stays stuck here (with the hard drive light solid), and either restarts eventually or stays here indefinitely.



If I boot from my Asus Windows Vista CD, it appears the only option it gives me is to reinstall my OS, which I prefer to be the last option (a big pain plus will lose all my files and settings). I don't see a repair option when booting on the CD.



I do occasionally get a blue error screen, but it only flashes for a second (not long enough for me to read it) before restarting.



After many attempts of rebooting, it is now automatically running chkdsk (before entering Windows). It appears it is going to take forever (it's only at 6 percent after a hour), and it's finding many file record segments (77192, 77193...1099444) as unreadable, although it does appear to have fixed two corrupted files. I am not optimistic that this is going to result in anything, or even finish within hundreds of hours!



I can't think of what caused this problem. I don't remember doing anything unusual today, and my antivirus protection is up-to-date. I did upgrade to MS Office 2010 a couple of weeks ago, that appears to have had some bugs in it and may have caused my system to be somewhat less reliable, but not sure if that had anything to do with this severe issue.



Any suggestions, please!?



Thanks,

Tyler

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