I have an HP C6100 printer and it keeps telling me to power down

Hi,
Try unplugging all the cables from the printer(power and data cables).
Press and hold the power button for 10sec(it will do nothing since its not plugged in. We are trying to remove the static electricity from the machince, if there is any).
Repeat the same process once more.

Now plug back all the needed cables and check.

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C6100 series is compatible with nearly all the Operating Systems, have you checked the Vendor's support site?
Click here to navigate to the page, and select the exact OS, then proceed to download.
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Concerned, Nooh

check the seting turn off any sleep or hibernate mode on the printer

i have the same problem but havent found a soulution yet i will post if i find one, can u do the same please if u figure it out.
thanks

To do a reset

1. Remove all the inks
2. Press and hold both the OK and CANCEL buttons
3. Whilst holding them remove the power cable from the back of the printer
4. Whilst still holding them - push the power cable back in.
5. Continue to hold the buttons for 10 seconds then let go.
6. Wait - it may reboot several times.
7. Go through the setup again and put the inks back

Your power supply is likely at fault here.

You can try to 'reset' the supply by unplugging it from the printer, and then unplug the AC line cord. Plug line cord back in, then plug back into the printer.

If you are still having issues, then use a multimeter to measure the DC voltage at the connector's outside contacts (middle contact is not used). You should have approx. 32 volts. If not, then replace your power supply. There are many sources on the internet. Otherwise, your printer may be at fault, consult your user manual for instructions on a master reset.

Hi,

The below are the resetting steps for this printer model. Try next reset if the first one did not help. Do not try all resets together

Power Drain:

• Turn OFF the printer, disconnect the power cable from backside of the printer and from wall outlet.
• Press and hold the Power button for 60 seconds.
• Connect the cable and turn ON the printer.

Partial Reset

• Remove the power cable from back side of the printer while its ON.
• Press and hold "#" and "3" button, while holding them both insert the power cable and release the button after 10 seconds.
• If printer turns OFF, press power button to turn it ON.

Semi-Full reset

• Remove the ink cartridges.
• Remove the power cable from back side of the printer while its ON.
• Press and hold "#" and "6" button, while holding them both insert the power cable and release the button after 10 seconds.
• If printer turns OFF, press power button to turn it ON.
• Insert the ink cartridges.

NVM Reset

• Remove the ink cartridges.
• Remove the power cable from back side of the printer while its ON.
• Press and hold "OK" and "Cancel" button, while holding them both insert the power cable and release the button after 10 seconds.
• If printer turns OFF, press power button to turn it ON.
• Insert the ink cartridges.

Regards
Riztech.

i had this happen once a long time ago, try these options below...
turn printer on/off, unplug,wait a minute plug in, should reset configs.

go to applications folder for your computer, dbl click printer icon for make of printer. check settings. print 'test document and clean cartridge heads', this should ensure proper printing formats.

lastly, go to web site of printer model and check site for trouble shooting if this does not work above. hp has an AWESOME web site for trouble shooting
hope this helps and good luck

Try This
First unplug the computer from the printer
Connect the printer directly to the wall outlet (there should be no surge protactor in between)
Unplug the power cable from the back of the printer and keep on tapping the power button for next 30 sec and then plug in back the power cable and
check if the same thing happens
Unplug the power cable from the back of the computer
(with one hand) press and hold down the (#) and the (6) button at the same time and plug in back the power cable
Release the (#) and (6) button (the printer may shut down) on the screen it will display SEMI NVM reset
If none of them happens try it once more
if still the issue remains
Do the same by press (#) and (9) button
If still it doesn't work you may change the wall outlet and check if still the issue remains in that case the printer has gone bad and cannot be repaired
Can call HP to return the printer and get an upgrade at low price for replacing the damage printer.
Regards Soumajit

Hello sir; replace cartridge whichever it necessary, better buy oem.