Hp shuts down before turning hd or fan

October 15, 2011 at 16:37:35
Specs: Windows vista, 3.0
IM BOUT READY TO RIP MY HAIR OUT. BEEN FIGHTING WITH THIS LAPTOP FOR DAYS. ITS A HP PAV ENTERTAINMENT EDITION WITH WINDOWS VISTA. IT SHUTSDOWN AFTER A FEW SECONDS BEFORE IT GETS A CHANCE TO START THE HD OR FAN OR SCREEN. EVERY ONCE IN A WHILE FOR NO APPARENT REASON IT WILL COME ON AND RUN FINE BUT VERY RARELY. I HAVE CLEANED IT OUT I HAVE REPLACED POWER SUPPLY I HAVE PUT IN NEW HD I HAVE CHWCKED THE FAN AND THE WIRES IT LIGHTS UP FOR BOUT TWENTY SECONDS AND THEN DIES. IT ACTS AS IF NO POWER IS GETTING TO THE HD BUT I DONT KNOW. CAN SOMEONE PLEASE HELP!

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#1
October 16, 2011 at 16:01:34
Sounds like the BIOS may be corrupt... a temporary solution would be to pause the BIOS post fot 5-10 minutes before proceeding with the boot. That's if you can see the BIOS post.. if nothing shows in the screen you may have to repeat until you get to see the BIOS post on the screen.
You could also reset the BIOS removing the battery for 5-10 minutes. Following step would be to replace the button cell BIOS battery,
Last step would be to flash the BIOS with the latesta available update.
I also sounds like the processor may be overheating. This due to poor ventilation (if the coller fan works, it may not be running at normal speed)... Or poor contact between the processor and heatsink.. nothing some thermal grease can't solve.
If overheating a computer may either; restart, turn off, or not boot... depends on how either the system or BIOS are configured to handle this situation. If it's possible to access the BIOS with F2 key and check this setting.

Read the Troubleshooting Tecniques, Power and Battery Problems, something there may help
http://www.hp.com/ctg/Manual/bpi043...


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#2
October 19, 2011 at 03:04:09
Thanks so much for your reply, I began taking it apart one piece at a time and was going to retack the heatsink when i came across a very tiny one of three wires attached to the power button. So small i dont even know how i saw it. it shut down according to how hard i pushed in the power button. Go figure. But thanks i wrote your info down for future reference being since all my friends want me to fix their computers because of my interest and luck with them

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