Question about HP Compaq Presario SR1720NX (EL435AA) PC Desktop
Left computer on overnight. Came back to frozen screen...pointer that wouldn't move. Couldn't hard reboot. Unplugged and replugged. Now it is stuck on the Compaq screen. Can't reboot or get into bios because keyboard not responding now. When I unplug keyboard and plug back in, lights flash once on keyboard and then it goes off again. This computer is one year old and I've never had a problem with it before.
I would take the cover off and reseat the memory, video card, and processor. Make sure your fan(s) are working too, and blow any dust out of it if you see a lot of build up.
Posted on Dec 26, 2008
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Jul 24, 2013 | HP PC Desktops
Recognize that you have a locked keyboard.
If your PC computer is not responding to keystrokes or is responding very slowly, you could have a locked keyboard.
Use your mouse to move the pointer over the "Start" button.
Use the left-click button to bring up the "Start" pop-up menu.
Position the pointer over "Settings" and use the left-click button to select. T
hen select "Control Panel." On some versions of PC operating systems, you can select "Control Panel" directly from the "Start" menu.
Select "Accessibility Options" to bring up another menu, then select "Keyboard."
You'll see three options that have check boxes.
Make sure each check box does not have a check mark in it.
The three options are "StickeyKeys," "FilterKeys" and "ToggleKeys."
Note that these options can become checked if the keyboard operator has repeatedly depressed the "Shift" key in rapid succession--or if the "Shift" key is held down for longer than eight seconds.
If the keyboard is still not responding, the problem could be that the computer has lost communication with the keyboard.
Turn off the computer.
Disconnect the power supply.
Remove and then reconnect the keyboard cable, then reconnect the power supply.
Turn the computer on.
This will reboot the computer, allowing it to recognize the keyboard.
hope this helps
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