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Its not drivers issue, hard ware issue.. Scanner assm faulty,replace it..For tech guys:Open flat bed glass, remove scanner assm clean inside reflector glass with ear buds & adf glass especially at home position.. lubricate on rail refix it back.. check it..
The tools you need (makecert, Inf2cat, signtool) can be found in the Windows SDK and the Windows Driver Kit. You don't need to install everything! Just check the "Tools" in both the web installers will do.
If you cannot download the SDKs due to filesize (~2.2GB), I zipped the 3 tools and you can download them here. But please download from Microsoft whenever possible.
When making your own cert using makecert, add the -pe parameter so that you can export the private key of the certificate later (useful for installing your own signed drivers again on a different PC in the future! To export, simply right-click your certificate in the MMC snap-in)
You need to use the newer INF in the Pastebin as the old one will not sign or validate correctly.
To scan in Windows 8 after driver installation, simply go to Devices and Printers, right-click your scanner and click Start Scan. You can also use the Metro 'Scan' app, although previewing scans return a very blurry image.
When I press the scanner button the top power button starts blinking but the machine does not scan. I have not used the scanning function on this machine before. Please help...you may need to reinstall your..
I have many years repairing Canon scanners and here is my suggestion to you.
If you are positive the lock switch is unlocked then I think what happened is the scanner inside the scanner is off its track an can not move. I would remove the glass on the top of your flat bed scanner to gain access to the scanner lens then I would try and move the scanner lens manually with the power off to the scanner. If it does move freely then I would think you have a bad scanner lens. If it doesnt move freely try and reposition the lens back on to its track. They some times jump off there track from shipping.
Is this a new scanner? If so, most scanners come "locked". Make sure you consult your user manual and remove the lock (usually by turning a knob/handle/switch under the hood somewhere).
If this has scanned before, watch the scanner bed as you try to scan. If the light does not coarse the entire scanner bed, then the lock may have become re-enabled... or the motor could have come off track. Sometimes this can be fixed by manually adjusting things inside (be careful! as this could really damage your scanner).
If the light does move entirely across the bed, try to re-install the software onto your computer. If you dont have the software, you can grab a copy at dell's support site.
Also, check your cables. If you are trying to scan through a network, you might try USB instead, just to make sure the scanner works. and its not a connection problem.
The connection type can be set during installation.
I searched HP.com but they don't have anything like this on their Customer Care site (or I don't know how to search for it successfully). I'm going to take a stab at it anyway, but it's just a guess. It sounds like a mechanical problem, with the scanning arm not moving all the way across the scanning bed.
The white area of your graphic probably describes the area where the scanning arm moves. I know the light is bright, but have you tried running a scan with the lid up, so you can see how far the scan actually moves?
Assuming this is the correct problem, your only option would be to have the device serviced so the fault can be repaired. If it's under warranty, that should work out OK. If not, you have to balance the cost of a repair against replacing the entire All-in-One unit.
If you set Automatic brightness/Contrast this happens. Try manual setting. Adjust different settings and select the best suited for a particular type of drawing. The scanner takes couple of milliseconds to judge the best lighting, by then the paper has moved little. This area appears black. This is easily solvable.
I couldn't find anything specific to the 3210 online.
Long shot, but this link is very detailed about another (very different) HP model that may just give you some ideas.
Usually on this type of hp unit, once you have the front two screws out the top cover wil just hinge towards the rear.
Could you post back some close up photos, hopefully we can give you some more help