Got Pavilion 23-h052 All-in-One and when i turn on the power i hear it turning on but the screen stays black tried reseting BIOS, didnt work. And i cant c any problem as to why. Its only 6 months old.

From HP's website:
1. Turn off the computer. If necessary, press and hold the power button until the computer turns off.
2. Disconnect all peripheral devices from the computer except the monitor, keyboard, and mouse.
3. Press the power button to turn on the computer.
4. As soon as you see the initial company logo screen appear, repeatedly press f11 until the
Windows is Loading Files message appears on the screen.
5. Select Windows Recovery Environment.
6. Follow the on-screen instructions.
7. When the recovery is complete, turn off the computer, reconnect all peripheral devices, and then turn the computer back on.

http://h10032.www1.hp.com/ctg/Manual/c04329428

now a lesson in laptop diagnosis if the HP diagnostic will not run.
per hp.com

1. big battery out first. and only use AC power pack to wall. end to end connected not loose./
2. hold power button 10sec, and release (the intel magic reset)
3. just see HP laptops splash screen ;and fans spin too,.
4. hear POST beep codes now wright them down
5. text POST error write them down;.
6. new HP , caps lock key , LED may shows blink POST codes
7. ESC key is next, and is bios main hot key this year.
8. F10 is bios page 1.
9. if you get this far we go deeper but here is the list. to do first.
10. last is windows as it does not run on bad hardware.(majors)

POST means power on self test this is bios job1 and runs fans too.
and produces POST errors if are present.

Try anouther screen . turn off, unplug, hold in the power button for 30 seconds, release plug in and try agin. this sometimes reset the capacitors on the board. can you hear the sound as it starts up also is there any lites on the back around the power supply?

ok it's a laptop., old.
let me guess 2003 made, square 4:5 screen
XP removed, (smart idea) Linux installed.
I guess the screen is 100% dead, not one pixel ever glows, right?
no text, ,no BIOS screens on demand, (esc key pressed, power on)

1: step 1 is always remove the main big battery. run now?
2: try external VGA screen yet, to see if the old internal screen is dead? see that VGA jack on the rear, and the hot function key that turns it on, bingo.?
(use a flash light to see if screen internal has data but the
CCFL back lamp is dead.?)
4: if bios is dead and both screens fail,what is next.?
19vdc from the power pack must reach the guts (MOBO)
if not all HP lap tops die. use a voltmeter or get a spare power pack
many power packs this old are now bad. 14 years old,
the can be good, bad, or weak. weak is bad.
5: sparks is a bad thing, in all cases, when heard it needs service.

BSOD:

http://pcdied.com/#black-screens

Hi

Try to remove the battery, hold on power button for about 50-60seconds, then plug-in the charger and turn the laptop ON, see what happens.

Please tell us your results
Good Luck

Try go into BIOS (press F1 after you start the pc). Then F9 for resetting BIOS settings.

please be specfic with details,did it boot,did you see the bios and logo screen then went to black,or does the screen stay black and when you turn it on you hear the fan running ,seems like its running but its not,if its the second senario,then join the club with the rest of us ,i have two under my workbench as we speak,asked the question a couple months ago,got a couple comments from techs,about poor motherboards,dry solder joints,i agree with their theory,dont know if this applies to yours,anytime i have a problem like this ,i start from scratch,meaning i pull the hard drive ,the ram sticks,motem,and any other hardware,dissasemble ,remove bios battery ,remove main processor,clean entire board with plastic safe electrical,do thurough visual inspection,reassemble and try agian,often this repairs whaterever happend,not always,good luck

i think that your bios is burned up . check if the bios's sticker is of or burned if it is then the oc goes to "happy land " or a new bios

That is a problem of BIOS. U need to reset your BIOS.
Acer Aspire One BIOS Recovery
The AA1 has a built-in BIOS recovery routine, making it possible to flash the BIOS even if the system doesn't boot anymore. It's only meant for emergencies and may void your warranty, so use at your own risk.

Follow every step carefully!

First format an USB stick with FAT.

Download the latest BIOS, and put both FLASHIT.EXE and the BIOS file in the root directory of the stick. Rename the BIOS file to ZG5IA32.FD, that's important. Do not remove the USB stick.

Turn the AA1 off, make sure both battery and AC adapter are connected. Press Fn+Esc, keep it pressed and press the power button to turn the AA1 on. Release Fn+Esc after a few seconds, the power button will be blinking. Press the power button once. The AA1 will now initiate the BIOS flash, do not interrupt it under any circumstances. After a while the power button will stop blinking, and the AA1 will reboot shortly after. Wait patiently.

The BIOS has been flashed and all settings reset to default.

Reboot and hold down the delete key to open the bios. Reset the bios to default settings then see if that fixes it. If not you may have to reload the computer to its factory load.