Not working display or sound

check in your control panel and go to systems.
Then go to hardware and under that go to Device Manager
In there see if there are any exclamation marks in your sound hardware,
conflicts and such.
If there are none then go to Sound Controls in Audio Devices and make sure the audio isn't muted in the windows program
Use this to do an audio test of your speakers.
If that isn't working but it should be check your wires to see if there is a break or if it is plugged into the the green colored jack for external speakers.

Look at your display. Does it show that you are using speakers A or B? Or is it showing nothing? If it isn't showing what speakers you are using then your Headphone Jack is defective. These are very easy to change out.

Part# is 9630294708 MCM electronics has them for $3.39

Sounds like a bad wireless card or the card slot.I would try replacing the wireless card.When wireless cards go bad they either cause the laptop to not boot,low or no signal reception or the card isn't seen at all by the motherboard or operating system or .both.If it isn't showing in device manager either with a caution sign or installed the card is most likely bad

the model number isn't correct.check and send the model number again.if you changed the sensor this should take care of the f3 error code but the clock shouldn't go blank and oven stops.like i say your model number doesn't show up as a good number,if this machine has a fan in it you could have a bad fan motor,the fan cools off the electronics and if it isn't working the clock assy. can get hot,damage it and it will do this,also i've seen on some models there's a screen where the fan is and dust gets stuck on the screen and the fan can't blow any air,i'm just telling you what i've found before but it sounds like the clock assy. is heating up and shutting down,if there isn't a fan in your model it sounds like you have a bad clock assy.if you send the model number i can look it up for you.

Several things to try.

First. Make sure it's plugged in, turned on, and turned up. (double check, this is way more common than you think)

Second: Make sure you're sound isn't software muted (check your taskbar) and make sure the system sound is turned up (on most operating systems this is done by clicking the speaker symbol on the taskbar and dragging the slider bar up)

Third: Unplug from the computer and plug back in and reset the computer.

Fourth: Make sure your sound device is enabled (the following is for Windows 7, please reclarify if this is not your operating system). Click Start>Control Panel>Hardware and Sound>Sound. Right click any empty space in the sound tab box and click "Show Disabled Devices". If "speakers" are disabled, right click and enable.

Fifth: Reinstall your device drivers. You probably have a CD with the drivers, alternatively you can go to the manufacturer's website and download them from there.

Shout out if none of that works.

It doesn't sound like the system is shutting down. It sounds more like the LCD display back-light isn't working. Try connecting an external monitor to you system and booting it up. You may find that the external monitor has video. You may also toggle through the three state video selections. Hold down Fn and tap F7. this should take you through all three steps. Good luck.

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hi there.
go to this link might help you find out whats gone wrong.
HP DV6000 laptop dvd drive isn showing up in my computer Google Search

Sounds like the call forward no answer isn;t set up on your extension. The first thing to do is to find out what the voice mail pilot number is. That's done by pressing feature 982. The display should say "set:xxx". The set number provided is the voicemail pilot number. Next you'll need to enter system programming. Programming is done on 7310, 7324 and 7316 type sets. Enter programming by pressing the feature key followed by **266344.When prompted to enter the password enter 266344.
The screen should say TERMINALS&SETS. The 4 top line/feature keys are now used for programming
At the terminals&sets prompt, press the show key (top right arrow). The display should now ask for an extension number. Enter extension number you want to change call forward no answer on.
Press the show key (top right arrow)
The display should say LINE ACCESS
Press the next key (bottom right arrow) .
The display should say CAPABILITIES.
Press the show key (top right arrow) .
The display say foward no answer.
press theshow key (top right arrow)..
The display should say none. Press the chng key and enter in the voice mail pilot number. press the show key again (top right arrow) To review the rings til forward. Press the chng key if you wish to change the ammount of rings til answered. Press the release key when finished

Is this a factory system or after market?

This error shows up if motor controller detects a failed part. This isn’t a reset-able error. Treadmill will not allow workouts until serviced.
Solution
Main motor wires/leads could be disconnected at the start of a workout. If the motor is properly connected and in working condition then the drive transistor could have failed. Check Motor Controller.