My Lenovo 3000J desktop has continuous beeping sounds when I turn the computer on and does not load the operating system. What can I do?

Are you trying to enter (get into) BIOS?

This is for another model of Lenovo on the Lenovo.com website, but it will likely still work:

How to enter IdeaCentre Q700 BIOS setting screen

To start the Setup Utility program, do the following:
1. If your computer is already on when you start this procedure, shut
down the operating system and turn off the computer.
2. Press and hold the F1 key then turn on the computer. When you hear
multiple beeps, release the F1 key.
To start the Setup Utility program, do the following:1. If your computer is already on when you start this procedure, shut down the operating system and turn off the computer.2. Press and hold the F1 key then turn on the computer. When you hear multiple beeps, release the F1 key.

First, is the computer coming on, do you hear the boot up beeps and sounds. if that is happening, try another monitor, if that works, buy a new one, if that does not work, repalce the video card. if none of that works, take the machine to a local shop for analisis. This might remotely be caused by a virus, but if you are using a good virus protection, it should have caught it.

Did you add a card in the computer recently ?

check the manual here page 30 for the list of beeps
http://download.lenovo.com/consumer/desktop_pub/lenovo_h4_hmm.pdf

it mentions :
"4 beeps : Motherboard timer not operational" (whatever that means, it sounds like something prevents the motherboard to work correctly), and recommends to remove any card added in the computer one at a time to identify the culprit.

If your Lenovo desktop is pre-installed with Windows operational system, press one-key reset key when your laptop is power off. Or press Shift + B to come back to factory setting instantly when Lenovo desktop is open.

Or press F2 when your Lenovo desktop is powering on. Few seconds later, a dialog pops up with several options, one-key reset and reset factory setting. Follow the operation wizard to reset factory setting is OK.

Related topic:

How to Factory Reset Samsung laptop?

Its mostly an RAM problem, you need to check you PC RAM. Also use a sytem utility software RegInOut to optimize your PC. RegInOut is a System Utilities program that includes several features which allows the PC users to speedup their computer performance. It improves system performance by removing junk files and fixing registry errors. Its additional feature of Internet Optimizer enhance users web browsing experience.

Hi,

Beep codes are codes used for troubleshooting hardware issues. Kindly read my Tips and Tricks to give you a better idea. click here

Here's a link to guide specifically for HP and Compaq computers. click here

Hope this helps.

There are two types of beep, the continuous one with the same interval ,it indicates memory problem, but if the beep with two short beep the graphics card has a problem.That works?

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GO ONLINE AND TYPE THE FOLLOWING INFORMATION AND THAN ENTER KEY

MANUFACTURES NAME, MAKE, MODEL.COM/VGADRIVERS

take out the RAM then put it again, then check

ok here it is it is a auto repair sys from lenovo

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Some of these steps may not apply to your computer. Test for system startup after performing each step.
Select your symptom from the following list or continue to the Need more help? section:

• Types of error message(s) or beep code(s) during startup
  • Power-on self test (POST) errors. These errors can be text, beeps, no beeps, or a combination usually before the operating system loads.
  • Operating system errors. These errors are usually a text message that appears while the operating system is loading the desktop configuration after the POST is complete.
• The system will not boot to a device and/or media (For example, a floppy disk drive or a CD).
  
  • Troubleshooting floppy disk drive issues - For instructions on setting the startup device sequence.
    
  • Troubleshooting CD-ROM drive issues - For CD media issues
• The system may hang or lockup intermittently
  
  • Troubleshooting intermittent issues, lockups, and hangs - For systems that appear to lockup or hang during the startup process
• The system hard drive requires clean up to improve performance
  
  • Troubleshooting hard drive issues - For systems that will not boot to the operating system installed on the hard drive
• The system is getting no power at all
  
  • Troubleshooting power issues - For systems that have no power at all
• The system does not boot to a normal configuration.
  • Restore system to a previous configuration