Can't fix jagged images and horizontal lines when scanning

Hello, I just bought the HP Envy 5660 and it prints fine but scanning is horrible. I keep getting jagged and horizontal lines after scanning. They came out fine a few times but even on 300 ppi it looks bad. Please give me some advice. Thank you.

Hello Hulkamania,
Welcome to the HP Forums.
I see that you are having some issues with the scan quality with lines and jagged images.
I have seen this issue before and I was able to resolve it quit easily by doing one simple step.
Please make sure that you have the printer power cable connected directly to a wall outlet and not a power bar/strip. Here is a document that uses a LaserJet printer as an example but it is meant for HP products in general. Please click on the following link that explains the Issues when Connected to an Uninterruptible Power Supply/Power Strip/Surge Protector.
Use the ON/OFF button to do a proper power cycle on the printer once it has been connected to a wall outlet.  This will do a Semi Power reset on the printer.
Try another scan and let me know how it turns out.  Try multiple scans if you like.
Thanks for your time.
Cheers,  
Click the “Kudos Thumbs Up" at the bottom of this post to say “Thanks” for helping!
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
W a t e r b o y 71
I work on behalf of HP

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