you can check the ink level from following steps
Method one: Check the ink levels from the idle screen on the color graphics display
Look for four icons at the bottom of the color graphics display. The icons represent the ink level remaining in each of the four color ink cartridges: black, yellow, light cyan (blue), and light magenta (pink). A larger and more accurate view of the ink levels can be displayed from the Setup menu.
If an ink cartridge containing non-HP ink is being used, a question mark displays instead of the ink drop in the icon for that cartridge. The HP All-in-One cannot detect the amount of ink remaining in ink cartridges that contain non-HP ink.
Figure 1: Non-HP ink icon
HP cannot guarantee the quality or reliability of non-HP ink. Printer service or repairs required as a result of printer failure or damage attributable to the use of non-HP ink will not be covered under warranty.
If a hollow ink drop icon displays, the ink cartridge represented by that color icon has very little ink remaining and will need to be changed soon. You might be able to continue printing for a short period of time with ink remaining in the print head assembly. Replace the ink cartridge when the Replace Soon warning message displays on the color graphics display.
Figure 2: Low ink level icon
When the Empty Ink
message appears on the color graphics display, the indicated ink cartridge is out of ink. Replace the indicated ink cartridge.
Method two: Check ink levels from the Windows computer
The estimated amount of ink remaining in the ink cartridges can be checked from the computer. See the on-screen HP Director Help for information on checking the ink levels from the Printer
Method three: Check ink levels from the Setup menu
Open the printer Toolbox. To do so, do one of the following:
The Toolbox opens.
Open HP Solution Center, click the Settings menu, then point to Print Settings , then click Printer Toolbox .
Right-click the HP Digital Imaging Monitor in the tray, then point to your printer model name, and click Display Printer Toolbox .
Click the Estimated Ink Level tab. The estimated ink level gauges display.
Press Setup on the printer control panel.
Scroll down and select Display Ink Gauge .
The Ink Gauge status from the Tools menu will only display on the color graphics display.
If the ink level is low and the cartridge is new please contact the dealer from whom you got the cartridge and if it shows that the ink level is good enough please comment so that i can give you another step to perform