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I have downloaded it onto my windows pc 3 separate times and each time it goes to start the program it shows the bitcoin wallet "loading addresses", then it's "loading block index" then my computer makes a noise and I receive this: error loading blkindex.dat. I click OK and it disappears with no options on how to fix.

I'm not very computer savvy. Please help.

Rachel
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2 Answers2

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Close the client, go to C:\Users\(Your Username)\AppData\Roaming\Bitcoin and delete everything in the folder except for wallet.dat - do not delete wallet.dat under any circumstances (and empty your Recycle Bin), then restart the client. Somehow your block index file became corrupted.

David Perry
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BinaryMage
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    Do not delete your wallet! – David Schwartz Mar 27 '12 at 23:23
  • You can get a copy of the blockchain from http://eu1.bitcoincharts.com/blockchain/ – Chris Moore Mar 28 '12 at 00:58
  • telling people to delete their wallet is a ( very ) bad idea . . . – neofutur Mar 28 '12 at 18:07
  • @David and neofutur: I agree entirely, but the question stated, at least in the way I read it, that she had just installed it and never actually transferred Bitcoins, in which case deleting a wallet is irrelevant. – BinaryMage Mar 28 '12 at 22:06
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    @BinaryMage I agree that in the case of this one question it sounds like the user had an empty wallet, but in the interest of providing good advice to future readers of this question for whom the situation might be somewhat different, I've edited in a warning re:wallet.dat. Good answer, though! – David Perry Mar 30 '12 at 16:39
  • @DavidPerry Good point, thanks for the edit. – BinaryMage Mar 31 '12 at 03:19
  • No problem! In some strange way it's almost like maintaining the quality of the site is my job... ;-) – David Perry Mar 31 '12 at 04:26
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    We only need to delete blkindex.dat right? Why do we need to delete the other files? – Pacerier Jun 15 '12 at 19:34
  • I don't find any folder named AppData in Users. –  Oct 04 '12 at 17:03
  • @Masud It is often hidden. You could just try typing the Appdata after you home folder on the field on top of the explorer window – varesa Nov 17 '12 at 09:50
  • This does not work on my laptop, and I got 1 transaction running currently, is there a way to fix this? –  Jan 29 '13 at 15:24
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I just had to delete blkindex.dat. It's a little painful since you have to re-download that ~2GB file, but it worked for me.