Having problems with your HP Pavilion a800n (PP163AA) PC Desktop ?

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

\015 I have tried a different\302\240 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 nothing..it'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!!!!\015

Answers :

After\015\012much trial-and-error, I finally figured out the solution for this\015\012common issue with certain HP Pavillion models. It turns out to be a\015\012design flaw with the front-panel memory card\015\012reader. Somehow the card reader's firmware gets scrambled, and it\015\012prevents the computer from booting. You can test this on your machine\015\012by 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)\015\012With the computer power unplugged (duh), open up the case &\015\012disconnect the card reader cable at the card reader itself - NOT the\015\012end that connects to the motherboard header. Make sure the cable end is\015\012not touching any metal components before proceeding to step 2 (another\015\012duh).

2) With the cable still disconnected, fire up the\015\012computer. The tech support doc says to let it boot into Windows and\015\012stay there for about 5 minutes.

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

4)\015\012Turn your computer back on - your memory card reader will work and,\015\012most importantly, the computer will no longer hang at POST!

I\015\012suspect that when you fire up the computer without the cable connected,\015\012the card reader is designed to reset its firmware by grounding out\015\012through the case - sort of like a CMOS Reset jumper on a motherboard.

I hope this solution is helpful to others.

best,
JohnB
Chechk with powersuply and that it is properly connected to the motherboard
Repair Help & Product Troubleshooting for HP Pavilion a800n (PP163AA) PC Desktop

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