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It could be dangerous for your laptop or PC because if relates with your processor but this problem could handle normally if this problem seems with RAM. I hope that if you replace your RAM, the problem will be solved but if the problem persist then you will have to replace your processor.
I am also facing same problem with my Dell Inspiron mini 1012, when i turn on my laptop it makes a beeping noise for about 15 seconds.the screen also goes black after this for about the same time.then the laptop works fine just wondering what may be the cause of this.
S Bhat, India
The most common reason that your cursor skips around is that you are touching the touch pad when typing. Some are more sensitive than others. On my Toshiba I had that problem, but it has a Fn key that allows me to turn off the touchpad. Problem went away when I went to a mouse instead. Had a client with a Dell with the same problem. I had to actually physically disconnect the touchpad and her problem went away. Now as for the first problem, (the HP), I'd say you have a stuck key on the keyboard. It would make that noise.
Try to unplug all the PCI cards and boot, if its still doing it check the ram. If its still doing it check to see if the power supply is good. If all that fails, It could be eather a bad mother board or bad processor.
I Can help you out Here.
Get yourself a new Battery, and A New AC Adapter.
Before you do extensive damage to your Motherboard If You Have,nt Already.
If you know you,ve got faults, Then They Need Repairing Urgently.