Printer keeps saying remove and check cartridge

You could remove both cartridges.
Close cover and turn off printer.
Unplug printer for at least 10 minutes before plugging back into the outlet
Turn on printer and install cartridges.
If this does not correct the problem, the cartridge may be bad.

i have this problem to.. will try to reset it and resend

Look on the right side where the cartridge goes, if the spring on the right is hanging loose it might have poked a hole in the ribbon cable at the rear near the contacts. If so it's time for a new printer, if OK, check the exp. date on the ink cartridge and if it's been refilled or a generic ink you may just need another one.

Remove black cartridge and check to insure the spring has not broken loose.

Your printer uses the following cartridges:

HP 74 - Black ink
HP 75 - Cyan, Magenta, and Yellow ink
HP 99 - Photo Black, Light Cyan, and Light Magenta

You need Photo Black, Cyan, Magenta, Yellow, Light Cyan, and Light Magenta to print photos. To accomplish this you install the HP 99 photo cartridge where your HP 74 black cartridge usually goes and you keep the HP 75 color cartridge where it's at. I don't know why your printer told you to remove both cartridges, then reinstall the HP 75 color cartridge.

If you are using Windows.
Go into "Start", "Printers and Faxes".
Right click on the printer icon.
Click properties.
Look for reset cartridge.
Or something similar.
That should fix the problem.

Try reseating the ink cartridges. The error references to either reseating or refilling the ink cartridges.
Since you have mentioned that it worked before with only black cartridge, try reseating both and check.

YOUR CARTRIDGE CIRCUTE IS DEAD TRY ANY OTHER BLACK CARTRIDGE IF STILL IT SHOWS SAME PROBLEM THEN IT MEANS YOUR CARTRIDGE CARRAGE IS FAULTY(MEANS PROBLEM OF CARTRIDGE HOLDER NOT OF YOUR CARTRIDGE.)

did you get this fixed?

Remove the right ink cartridge (color). You will get an error saying the cartridge is empty, but ignore that. Hit cancel on your printer. Print your job...when your print screen comes up, under preferences check the box for print colors in black and white. Your printer should print just fine without the color cartridge. Ignore the flashing red light.