Question about HP Pavilion a800n (PP163AA) PC Desktop

2 Answers

HP pavillion a800n pc wont' boot up..I get nothing...

I have tried a different  graphics card,changed the cmos battery,reset the psswrd,reset the cmos....nothing ..the fans are running...lights are on...but no power is going to the moniter.I have tried two moniters,unhooked the hd to see if I could get into the bios...but's like it's dead the only beep I can get is when I removed the ram and didn't insert it all the way then I got one long beep after another...can anyone suggest another tactic to try???????????help!!!!

Posted by on

  • Donna Oct 31, 2007

    Yes the power supply is properly connected..any other ideas??

  • con44 Dec 30, 2007

    I took out my ram card to put in a new one to replace it and when i put it back in i tried to turn it back on and all thathappens is the computer is on running but a bunch of beepings



2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 20 times.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 16 Answers

After much trial-and-error, I finally figured out the solution for this common issue with certain HP Pavillion models. It turns out to be a design flaw with the front-panel memory card reader. Somehow the card reader's firmware gets scrambled, and it prevents the computer from booting. You can test this on your machine by temporarily disconnecting the card reader cable at the motherboard header. Voila - I'll bet you $1 that your computer will now boot!

The solution is buried deep inside this HP tech support document. The card reader firmware needs to be reset.

Here\'s how to fix it once and for all:

1) With the computer power unplugged (duh), open up the case & disconnect the card reader cable at the card reader itself - NOT the end that connects to the motherboard header. Make sure the cable end is not touching any metal components before proceeding to step 2 (another duh).

2) With the cable still disconnected, fire up the computer. The tech support doc says to let it boot into Windows and stay there for about 5 minutes.

3) Shut the computer down and reconnect the cable to the card reader.

4) Turn your computer back on - your memory card reader will work and, most importantly, the computer will no longer hang at POST!

I suspect that when you fire up the computer without the cable connected, the card reader is designed to reset its firmware by grounding out through the case - sort of like a CMOS Reset jumper on a motherboard.

I hope this solution is helpful to others.


Posted on Mar 28, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Chechk with powersuply and that it is properly connected to the motherboard

Posted on Oct 31, 2007


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Ato x600 hp pavillion won't boot

You could try disabling the on board video in BIOS.

Feb 04, 2013 | HP Pavilion Computers & Internet

1 Answer

Boot up hp pavilion a1340n and get no vga signal

Have you checked , verified monitor cable, pins bent? You can try a PCI or better a PCI e Graphic Card. Does it boot? Have you tried another monitor?

Dec 25, 2012 | HP Pavilion a1340n PC Desktop

1 Answer


that PC MOBO has and on board (MOBO) GPU
Integrated graphics using GeForce 7100

see the 15pin VGA port on the rear, ?
Make sure the chip is there, some versions of PC by HP
do not have the chip, (only searching at with your full service tag will tell you what version a6300 you have.
If the chip is there, leave the battery alone, 3vdc, ok,?
and go in to BIOS> and change the bit. oops screens dead
(chicken and egg deal)
but if set wrong, and if defaults is external VGA card
then you are in trouble, i for one do no know the defaults of 100000,
HP machines,

the F5 key for BIOS sets BIOS to defaults.
not sure it can be done blindly
here is the bit you cant reach, and now you know why.
no card.
advanced tab.


Mar 26, 2017 | HP Pavilion Desktop a6300f Intel Pentium...

1 Answer

HP Pavillion a1555a stuck on the blue HP Invent screen.

You have to uninstall the old graphics driver in Contol panel / add / remove programs rebbot the install new drivers.

Mar 05, 2010 | Video Game Consoles & Games

1 Answer

My computer does not boot . I have tried taking off the cmos battery.Putting other ram,power,video card and nothing.. I dont see any component of the mainboard burned. Is there any way to reset it ?...

If you hear any beep sound then the rams are defective or the graphics card seems to be defective.You can remove the cmos battery for five min. then try to power on the pc if it did not help then repair the board.

Feb 03, 2010 | Computers & Internet

2 Answers

I have an HP Pavillion a1250n which has a MS-7184 V1.0 that will not boot. When turned on the HP Invent logo screen appears with thw following at the bottom:(Esc=Boot Menu)(F1=Setup)(F10=System...

It sounds as though you might have a problem with BIOS.
You should remove your motherboard battery (little round silver disc) and if you can find (or Google motherboard model#) the CMOS reset jumper, you can remove the battery for 30 seconds and put it back in and reset the CMOS, then see if it boots. If it doesn't, you might need to flash the BIOS, which is not recommended unless you know what you are doing.

Nov 16, 2009 | Intel Motherboard

3 Answers

Wrong display on boot up.

Is the post/splash screen clear on initial boot up? Can you see the post information clearly?

Sep 29, 2009 | Intel D865GVHZ Motherboard

1 Answer

Hp pavillion dv7 won't power on

Same issue - solved by disconencting everything (main battery, CMOS battery, RAM, hard disk and wireless card). Held in power button for 20 seconds (HP say this removes any electostatic charge on the main board). Reconnected everything and machine booted to Windows. Ran HP's onboard diagnostics and everything checked out OK.

Mar 30, 2009 | Computers & Internet

Not finding what you are looking for?
HP Pavilion a800n (PP163AA) PC Desktop Logo

653 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18417 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers


Level 3 Expert

538 Answers

Are you a HP Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides