Why does my HP laptop hang or freeze?

My laptop freeze after about half an hour help please?

• after about half an hour (sometimes less) the laptop will freeze, here is a picture of what it looks like i found it off the internet and it is what mine does http://is03.thegumtree.com/image/extrabig/111661107.jpg the only way to get rid of it is to restart it by holding the off button the laptop is a hp pavillon dv7 2030ea entertainment laptop i have tried to update the drivers and i am on the latest drivers havent a clue what to do any help it greatly appreciated

• Answer:

  Try remove the battery and charger/ac adapter/power cord from your HP Pavillon dv7-2030ea laptop, press and hold the power button for 20 seconds to discharge any residual current inside the laptop. This clears your RAM and is like a hardware reset. Replace the battery and charger/ac adapter/power cord and turn your laptop on. Uninstall unnecessary programs and applications. Scan with a antivirus program Scan with a spyware/malware program DEFRAG C: CHKDSK C: Clean up and repair registry problems. Use external harddrive for all your future downloads. If the problem persists, did you check if it could be your laptop power cord or power source problem? Defective or insufficient power supply might cause error messages that are misleading. Take the battery out and power on your HP Pavillon dv7-2030ea with the charger only. Make sure your laptop power jack and charger plug tip are securely connected. Did you notice the power jack loose? You can find laptop power jack on ebay. Fixing and soldering the power jack requires professional skill though. The charger green/blue LED should be on. If not, replace the defective charger. HP Pavillon dv7-2030ea laptop battery charger has its own limited lifespan and does not last forever, consider buying a lifetime warranty charger online from company like topmic.com