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Can't install windows 7 64-bit.

Okay, for about a week now I've been trying to install Windows 7 64-bit onto my hard drive without success..

I was originally trying to preform a clean install from Vista Home Premium 32-bit, however anytime I tried to boot the install from the disc I'd receive an error message "0xc0000225"

I figured okay, maybe vista is causing yet another problem, I proceeded to wipe the Hard drive clean & try to install that way.. I received the same error, so I popped the 32-bit install disc in & restarted the computer. The installation started this time, so I let it complete to get to my OS to Windows 7 Home premium 32-bit.

Afterwords I put the 64bit disc back into the disc drive & restarted the computer only to receive error "0xc0000225" all over again. I'm not sure why this is happening because I've been building my computer based around 64-bit compatible components. The only 2 components which I pulled from my old machine was the "Cd-drive" & "Hard drive" could one of these be causing this issue? Why am I getting this error message despite having a clearly 64-bit compatible system?

My Specs
Mobo: Evga Nvidia 750i Sli
CPU: Intel core 2 duo e8200 @2.88ghz
GPU: Pny Geforce GTS250 1gb
Ram: 4gb DDR2 800mhz
7 answers Last reply Best Answer
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  1. Enter the BIOS Setup.

    From the main CMOS Setup Utilty menu choose Power Management Setup.

    In the Power Management Setup menu check that the ACPI function option is [Enabled].

    Try the install again.
  2. ko888 said:
    Enter the BIOS Setup.

    From the main CMOS Setup Utilty menu choose Power Management Setup.

    In the Power Management Setup menu check that the ACPI function option is [Enabled].

    Try the install again.


    It seems that it was already enabled.. below it was another line which said ACPI Suspend Type (S1 & S3) do I need to do anything with this?
  3. Best answer
    Also check the following:

    Enter the BIOS Setup.

    From the main CMOS Setup Utilty menu choose Advanced BIOS Features.

    In the Advanced BIOS Features menu check that the APIC Mode option is [Enabled].

    Try the install again.
  4. Best answer selected by malkuno.
  5. ko888 said:
    Also check the following:

    Enter the BIOS Setup.

    From the main CMOS Setup Utilty menu choose Advanced BIOS Features.

    In the Advanced BIOS Features menu check that the APIC Mode option is [Enabled].

    Try the install again.


    Thanks alot, It's installing now.. XD
  6. You're welcome, glad I could help.
  7. Hello, I have tried all of the above and I still have the same problem.
    I inserted the Win7 installation disc and also tried the recovery disc.

    It won't read any cds. I even tried WinXP but with no luck.

    Help?
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