Perplexed with SFC results

Been using Vista since it was released, so not really new to it, and have seen lots of problems -- all of which I could fix until now.

Brief summary: Decided last week to take the plunge and install SP2 -- failed. Ran sfc -- said it couldn't repair some files. Contacted MS support, spent HOURS online with them while they attempted the same (and failed). They tried to remove SP1 - failed. They ran sfc -- also had same errors. Ordered a new Vista Ultimate 32-bit DVD with SP1, did a nondestructive reinstall -- worked. Tried installing SP2 again. Got all the way through to stage 3 of applying the updates when it failed (no error message) and said it was reverting.

Now, MS is telling me I have to wipe Vista and reinstall from scratch!!

OK, so I have biweekly image backups going back to day one. Have been restoring from backup, and each time, running sfc /scannow -- and each time, having it tell me that some files are corrupt and it can't repair them.

Now back to early June (three months back). Still getting sfc failures. Since I'm not about to reinstall all my apps all over again, I'll keep going through backups until I get one that doesn't fail sfc anymore.

But ... what I don't understand is how could my system files have been corrupt for months and NOT exibited any problems at all? No windows update failures. No BSODs. No application failures. NOTHING -- until I tried to install SP2.

Oh. BTW, I booted from the Ultimate DVD and ran Startup Repair -- and it told me nothing to repair! I clicked on the item to see the logs, and sure enough, everything in the logs passed. So, if there's nothing to repair, how can sfc still be failing?

Sorry if this sounds like a rant ... but I used sfc on XP and it always worked. This is the only time I've tried to use it on Vista, and it fails!
 

My Computer

System One

  • Manufacturer/Model
    Home built
    CPU
    Athlon x64 4400
    Motherboard
    ASUS A8n32-deluxe
    Memory
    OCZ 2GB low-latency 3200
    Graphics Card(s)
    ATI X1600
    Sound Card
    B-enspirer CMI8788
    Monitor(s) Displays
    Samsung 24-inch flat panel
    Screen Resolution
    19290x1280
    Hard Drives
    WD 320GB SATA II
    PSU
    350 watt enermax
    Case
    Antec PS180
    Keyboard
    Logitech G15 gaming
    Mouse
    Logitech wireless
    Internet Speed
    Broadband -- 15MB
What was the error when SP2 failed? The easiest option would be to ghost all your programs/data and then reinstall Vista afresh. Have you installed any new drivers that could be causing problems?

Following this I would go back to SP1, download the whole SP2 (x86 or x64), disconnect from the internet, uninstall any antivirus you have, then reinstall SP2.
 

My Computer

System One

  • Manufacturer/Model
    Sony Vaio Z46GDU
    CPU
    [email protected] w/6MB L2 cache 1066MHz FSB
    Memory
    6GB DDR3 1066MHz SDRAM
    Graphics Card(s)
    9300M GS 256MB + Intel Integrated 4500MHD
    Monitor(s) Displays
    13.1" WXGA True Colour Tough
    Screen Resolution
    1600x900
    Hard Drives
    320GB SATA 7200RPM
    Internet Speed
    1MB/s
What was the error when SP2 failed?
Didn't provide an error code. Just got through stage 2, started into stage 3 and said it was "reverting". No other info.

The easiest option would be to ghost all your programs/data and then reinstall Vista afresh.
Ordinarily, this would be true, but since I have biweekly image backups, the simplest option to me is to restore from a backup.

Have you installed any new drivers that could be causing problems?
No

Following this I would go back to SP1, download the whole SP2 (x86 or x64), disconnect from the internet, uninstall any antivirus you have, then reinstall SP2.
That's what I did the first time, and that's what failed.
 

My Computer

System One

  • Manufacturer/Model
    Home built
    CPU
    Athlon x64 4400
    Motherboard
    ASUS A8n32-deluxe
    Memory
    OCZ 2GB low-latency 3200
    Graphics Card(s)
    ATI X1600
    Sound Card
    B-enspirer CMI8788
    Monitor(s) Displays
    Samsung 24-inch flat panel
    Screen Resolution
    19290x1280
    Hard Drives
    WD 320GB SATA II
    PSU
    350 watt enermax
    Case
    Antec PS180
    Keyboard
    Logitech G15 gaming
    Mouse
    Logitech wireless
    Internet Speed
    Broadband -- 15MB
What are the SFC errors? Does Event Viewer show anything in the System Log?
 

My Computer

System One

  • Manufacturer/Model
    Sony Vaio Z46GDU
    CPU
    [email protected] w/6MB L2 cache 1066MHz FSB
    Memory
    6GB DDR3 1066MHz SDRAM
    Graphics Card(s)
    9300M GS 256MB + Intel Integrated 4500MHD
    Monitor(s) Displays
    13.1" WXGA True Colour Tough
    Screen Resolution
    1600x900
    Hard Drives
    320GB SATA 7200RPM
    Internet Speed
    1MB/s
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