why does my hp laserjet 4250n lights stay on?
363128
please be more specific on this, is these a brand new machine, if yes you better call for service maintenance  it is free or stili under warrany, if not what is the error code flashing on the lcd display, be more speficic, hp4250n is a complicated  machine,
215667
check ur connections and see if there are any loose wire or burnt bulbs
165350
wattage of the bulb is important...prob not generating enough heat to make the 'lava' flow (wax).\n\nIt should show signs of flow within an hour...at least!
418568
You need to adjust your headlights, they are likely pointing too high and you are setting off the light sensors on the light poles that turn the lights on and off.
147653
Your "system idle process" should normally be very high when not much else is happening - it's Windows' way of saying "this is the unused CPU capacity". As far as the light always being on, it may be a software issue. When in doubt, take the machine to a PC shop or trusted friend whose day job is computer repair, and ask them to check for unwanted programs.
19631
This is a bug in the printer driver.  I recently got an email from HP asking me to download the latest driver for my printer.  It worked perfectly after that.  \n\nI had the same problem before.\nHere's the email I got from them\n\n******************************************************************\n       URGENT SUPPORT NOTIFICATION FROM HP\n******************************************************************\n\nIMPORTANT Firmware Update for PSC 1600 and 2350 Series Printers\n\nHP is dedicated to helping you get the most out of all your HP\nor Compaq products and to protect them from potential problems\ncaused by possible performance issues originating in your\nproduct hardware.\n\nAs a valued customer, this notice is being sent to advise you\nsome PSC 1600 Series and 2350 Series products are experiencing\nan issue where the units may have an ink cartridge rejection\nerror. This error may render the ink cartridge inoperable.  \n\nFor further information and product firmware update go to:\nhttp://US-UrgentSupport.p08.com/u.d?2lTJUWmJdUJXwIS=40\n\n******************************************************************
266881
Maybe the circuitry is fried.  Reinstall the printer driver, make sure none of the plastic strips are still in the printer cartridge and then reboot your computer.
1000867
I have seen this happen before with HP deskjets and I reinstalling the printers drivers did the trick each time.\n\nTry to get the most recent drivers of the printer manufacturers website.\n\nGood luck!
538599
It sounds like it is staying in Standby Mode.\nRight Click Desktop> Screen Saver> Power>   System Stanby and Hibernates to (NEVER).\n\nGo to to system Setup. Restart your system and press F2.\nand set power Management.\nHarry
1098443
I had this problem before.  I believe if you are still under warranty, they'll send them to you for free, otherwise you'll have to call them and pay something like forty bucks for them. You might be able to download it from HP is warranty is active, or try  a p2p site if warranty is up.  Good Luck.
293141
1st of all this is what it is:  A "Background" HP task installed by the drivers for the HP OfficeJets K60 & G85.\n\nThis is what you do. Uninstall the printer by going through the add/remove options. Then reinstall it,but before you activate your printer go to the HP web site and download all of the updates. Problem solved... Have a nice Day :)
1097057
i have encountered this problem before on a similar model. I unpluged the power cord from both sides, then tried to manually push the cartridge to the original startup position. Finally, plug back the cord, and you should be ready to go. More info can be found on the HP support website where there is an entire article dedicated to this issue.
112188
There may be something up with the laser on your DVD drive, which would suggest a hardware fault perhaps.  Im not too sure about software stuff but there may be settings that are causing it to stop prematurely. Check that all your DVDs are clean and that the bay itself is fee from dust etc...
706676
There has been a minor issue with a few of the K550 printers. Some customers, even when they purchase a new black cartridge, are no longer able to print black. This is due to the printhead and cannot be fixed by purchasing new cartridges.\n\nGo to HP's website and e-mail them the trouble you are having and what you have done to try to fix it. They have an one-hour e-mail response team trained to help with questions such as this. You also have the option of calling their toll-free number which is listed on their website. And last of all, if you wish, they have free online chat with a tech.\n\nThere is someway to reset the printer to allow it to print in black. HP will walk you through this. If it doesn't work, they will likely send you a repair kit. Your printer is probably still under warranty, so this shouldn't cost you anything. Hope everything works out!
271387
unplug and remove the print file (if any from the pc)turn back on....\nif this doesnt work buy a HP..
136786
They want to be really sure it's out before the go to all the trouble of figuring out how to change it.  Some kinds of fluorescent lights will sometimes come back for a few minutes if you to that, though.\n\n_____\nThe previous answer explains why the would turn it off and then on, but the question asks about on and then off :-P
416742
i think you doing it wrong , yhe friver on xp will do the work in installing your laserjet hp 6l, it the same model i've had but it working on xp driver, pls check if your printer had adefective board that why you can't install it on xp