how do I re install my win 7 64bit which was changed to a 32bit os

I have a acer 5749 which came pre-installed with win 7 - bit OS. After numerous problems with the os, ebuyer who I bought it off, done something to my system during a 3rd failed repair. The acer has come back to me with a 32 bit - win 7 installed. No back up available, no acer recovery system installed , nothing. A couple of basic programs is all that is on it.
If the original win 7 bit on the bios is pre-installed when first made, can I still access these settings to upgrade again to 64 bit?
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More about install win 64bit changed 32bit
  1. Changing from 32 bit to 64 bit requires a clean new install.
    But... you can activate using the original activation code which should be on a label on the pc.
    If you don't have the label, run a program called magic jelly bean keyfinder to find it.
    You will have to download or borrow a 64 bit dvd to do the reinstall.
  2. geofelt said:
    Changing from 32 bit to 64 bit requires a clean new install.
    But... you can activate using the original activation code which should be on a label on the pc.
    If you don't have the label, run a program called magic jelly bean keyfinder to find it.
    You will have to download or borrow a 64 bit dvd to do the reinstall.


    Hi Geo.
    Thanks for the reply to my question. I will see if the Acer will let me change back to the original 64bit. I do have another query concerning what you said in regards to sourcing a 64bit dvd. " Do you mean OS - 64bit disc, or just ??????

    Thanks for your help, much appreciated.
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