laptop won't start

  Botch Casually 16:47 08 Jul 08
Locked

It's an old HP pavillion zt1231s.
When the power button is pressed it either starts and may even run fully up into windows- but then freezes- or else it will make a strange noise from the drive and sits there with no screen output at all not even the backlight. sometimes in the second state it produces a 16 second long beep and will at about 30 second intervals repeat this beep.

i have tried substituting a spare drive. I managed to try reloading the operating system to factory default. I have removed the cd drive to no avail I have also reapplied the thermal compound.
Once in a blue moon it will start and run, working normally for hours, until you next turn it off.

One last item it fails to charge the battery, again a substitute tried.

Any help would be appreciated.

  woodchip 16:56 08 Jul 08

Try the Laptop without the battery

  Botch Casually 16:57 08 Jul 08

I already did - no go
Thanks

  woodchip 21:31 08 Jul 08

How do you know that the new second hand drive is any good

This thread is now locked and can not be replied to.

Surface Pro (2017) vs Surface Pro 4

20 groundbreaking 3D animation technologies coming to Siggraph 2017

iPad Pro 12.9 vs Surface Pro 5