CanoScan D646U Scanner Problem

I have a problem with my scanner , for some reason  i wanted to scan a picture today, i click "acquire" on my favorite picture viewer (infranview) like always to scan a picture..and I received a error:

" TWAIN error!
Can't connect to device or the TWAIN Driver is not installed! "

well i tried with "Select twain source" on my favorites image programs like infranview and photoshop, the source list is empty..

..Looks like the twain driver is not installed or corrupted.. so i uninstalled the driver and i installed it again but it's the same..

I'm very frustated right now :(, i tried everything ..the usb port is connected and i have the latest driver..also when i did a test in the driver propierties it says that it's working fine but i cannot scan anything , i can't also see the scangear manager..

My system is Xp Home.
Please help me to solve this problem. thanks in advance.
sergio23Asked:
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Luc FrankenEMEA Server EngineerCommented:
Have you checked all cables? Also, have you checked for updates for your USB controller? Chipsetdrivers? etc.
Also, try updating XP => http://windowsupdate.microsoft.com
If also that fails, try Start => Run => type "SFC /scannow" (without the quotes) and press enter.

Greetings,

LucF

p.s. you did try the updated drivers from here? => http://tinyurl.com/yx6f
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sergio23Author Commented:
still the same :(

I want to say that i used my scanner las week, it was ok..i didn't know what happen.

:(

I think it's a problem with the TWAIN Driver in my system., i don't konw much about it.
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Luc FrankenEMEA Server EngineerCommented:
Have you tried your scanner on another computer, if it doesn't work there, your scanner might have died :-(
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sergio23Author Commented:
it works m8, it pass the test...there are not problems with the scanner, i think it's a problem with the TWAIN DLL that comes with windows XP, i think its damn corrupted...practically its a problem with the TWAIN. Is there a way to get this dll fresh and register it via run command?
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Luc FrankenEMEA Server EngineerCommented:
You can probably find it at http://www.dllfiles.com after you've found it, you can register it by: "regsvr32 <dllname>.dll"
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