HP Laptop Problems
HP Laptop Problems
hp laptop problem
There are some tips how to fixing HP laptop problems :
AC power adapter
Troubleshooting: AC Power adapter LED is off when you plug the adapter into the wall but not into the computer
Has it been overloaded? Is the power strip turned on / is the outlet working? Is the cord from the adapter to the wall completely plugged in on both ends (try wiggling)? Your adapter may be fried- try borrowing an indentical adapter from a chum and seeing if that one will work in it’s place ( but do not plug it in to your PC, or you might fry your friend’s adapter).
Troubleshooting: Check output voltages with a volt meter/multimeter
For those of you with circular connectors, your task is simple. Measure the voltage between the inside and the outside. A diagram on the adapter’s label will tell you which should be positive and negative
For those of you with the 3-pin Dell power connectors, I do not have a diagram for you yet, sorry. If you try measuring each of the three possible pairs of pins, you should get twenty volts between one of the pairs.
Short circuits
Anywhere in your laptop, physical or electrical damage may cause a short circuit. A short circuit will consume all available power, causing your laptop to not turn on. If your power adapter LED comes on when you plug it into the wall, but then goes off when you plug in the computer, you almost certainly have a short circuit.
Troubleshooting short circuits
An ohm-meter / multimeter will read less than ~3 ohms when you measure the resistance between sides of power going into a short circuit. When measureing between then power pins going into the back of your PC, consider the 2 pins where you predict voltage to be applied by the AC adapter. If the resistance indicates a short circuit, this is bad.
A common ploy to help isolate possible issues is to try and anything that might be a short circuit. Take out the battery, the drive, the DVD/CD drive, the DVD/CD drive, PCMCIA cards, USB devices, miniPCI cards. See if the computer will then turn on.
You might have luck with a thermal imager (see story below) to get a hot spot due to the short circuit.
Computer turns off randomly
Your computer can turn off due to: power overload in the AC adapter, overheated processor / clogged fan, overheated battery, pushing the power button, Windows telling it to, the BIOS telling it to, loose wires (especially the power wire ), or intermittent short circuits.
The most prevalent problem is cooling. Try going somewhere air conditioned. Notice if the fan is broken or clogged with dust (common older HP problem).
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