Hp Pavilion a730n unknown issue

press f10 for bios . about 3-5 seconds after turning it on. you may tap it several times.

GL
hope this helps

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Thank You
Jammer

It is most likely a bad AC adapter. One way to test it is to remove your battery (I put the steps to do this below) and just plug the laptop in with the battery removed. If it does not power up then your AC adapter is bad. You can buy new batteries online or at your local electronics store. I would advise against buying them from a store though because they are usually much more expensive. I did a quick google search and found some on amazon for a pretty good price.
http://www.amazon.com/HP-Pavilion-DV8225NR-Battery-Replacement/dp/B003KVZIQ2

Remove the battery by following these steps:

a. Turn the computer upside down with the front panel

toward you.
b. Slide and hold the battery release latch to the left.

(The front edge of the battery disengages from

the computer.)
c. Lift the front edge of the battery up and swing it back.

d. Remove the battery.

if your power supply light is blinking and wont reset that means a component in the power supply has failed or fried or something unknown happened and will have to be replaced

It should be on the Windows COE sticker or with your CD System Rom.
Hope that helps.

Lyle,
You need to download the audio driver, and install it.
Just had to do this with my Gateway after a Restoration.

This is HP Support, and the main support page for the Pavilion a730n desktop computer,

http://h10025.www1.hp.com/ewfrf/wc/product?product=431078&lc=en&cc=us&dlc=en&submit.y=5&submit.x=1&lang=en&cc=us

On this page left-click on the heading -
Software and Driver Downloads. (Ampersand for and)

On this page choose your Operating System.
I chose Windows XP for an example.

(Left-click on the blue down arrow to the left of the box, that has Select in it. Then left-click on the Operating System your computer is using. Now left-click on Next)

Left-click on the + sign to the left of -
Driver - Audio (1)
Now left-click right on the file name -
Realtek High Definition Audio Driver Update

Left-click on Download.
(In blue rectangular box with two right arrows)

Instructions from HP Support for downloading, and installing:

Installation Instructions1. Download the driver update.
2. Double-click the icon for the update file downloaded in Step 1, and then click NEXT.
3. Accept the terms in the HP license agreement, and then click NEXT.
4. Click YES and wait for the update to complete.
5. Click YES to restart your PC.

Once you have restarted your computer, and Windows has full loaded, you should get a pop-up out of your system tray.
Your audio (Sound) should be back now.

If this doesn't work the only alternate suggestion I may offer, is to but an inexpensive sound card, and install it.

(Computer unplugged from power, follow Anti-Static Precautions.
Don't forget to install the CD disk from the sound card FIRST, then install the sound card)

If you have additional questions regarding this, please post in a Comment.

Regards,
joecoolvette.

(Would like to hear from you so that I know you read my solution, thanks)

it could be a mother board problem or Power supply issue. Even if the power supply works it wont supply required voltage to some components.Its better you get a new power supply and test it.Still its not working it could be a mother board issue.There will be a chance for power button issue also.

this could be a power problem. better have check at your local computer repair shop.

either you have a virus or the user profile is broken... that could be the uwer hive in the registry is broken if you can not make a new user and it works. Try booting into safe mode to see if it might be a driver issue or such. Next build a new profile. If none of those work, try a repair installation from your windows cd to repair the profile information with a new profile. those usually work in your situation for me.
Thanks!
STan Sakggs

There is a BIOS update available that may fix the problem. This page is for Wins XP
http://h10025.www1.hp.com/ewfrf/wc/softwareList?os=228&lc=en&dlc=en&cc=us&lang=en&product=431078

is there a problem you are encountering? does your pc shutting down? what is your present power supply wattage? if that is 300watts then you can change even 450watts.