My hp office jet 7210 takes several minutes to

Buy a new printer.they are old if more than yrold

Yes; there is a great (official HP !) video tutorial on how to take it apart properly here:

Try this simple step,

Disconnect the power cord from back of printer ( while printer is on )
wait for 10 seconds and connect it back
let the printer Initialize and Try to scan.

IF this does not work, you probably just need to uninstall and reinstall the drivers.

you may need to visit the hp website for additional software

And I have exactly the same problem too that has happened in the last few weeks.

I've tried reinstalling the software/drivers and resetting the printer to factory settings but no joy. An upgrade either windows or HP must have caused this!

the main system is faulty same thing happened to me.

I also was not able to copy, scan or fax multiple pages through the ADF of our HP Officejet 7210 AIO, but it would print well from the computer.

It would either grab several pages at once, or not grab paper at all. The device was trying to work but had poor traction action. Not sure if that's the same issue you are facing, but if it is, this is what fixed my 7210: I purchased part number C7309-60091 which is the feed roller assembly, and part number C7309-60076 which is the separation pad from Encompass Parts, and replaced them. The ADF works great now. The HP Officejet 7210 had only 5,000 pages printed on it, so I chalked it up to our very dry atmosphere here.

it may be the rollers on the adf depends on what happens when you try to copy

did you install the printer driver on the laptop??
laptop need to know what type of printer and all the setting.
go to printer and faxes see if the HP office jet 7210 is in the popup.
if it is in there try to send a test page to the printer via wire connection.

START PRINTERS & FAXES PRINTING PREFERANCES choose both the options - print on both sides - flip the page option apply ok close the printing preferances box try printing