compaq 8510p bios password reset problems solved

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Search in the net for Document Part Number: 438906-003, it will result to the URL:

http://h10032.www1.hp.com/ctg/Manual/c02496888

There the HP Compaq 8510w Mobile Workstation and HP Compaq 8510p Notebook PC Maintenance and Service Guide

Is offered to read or to download as a PDF Document  of177 Pages:

HP Compaq 8510w Mobile Workstation and HP Compaq 8510p Notebook PC

Maintenance and Service Guide

Take especially notice from the here in pages number 44, 47, 56, 75, 78. Read them carefully (to understand the needed activities in advance of starting actions).

1. unplug the power cord
2. Remove the battery
3. Press power on switch about 30 seconds to uncharge the main electronic components
4. Remove the RAM memory modules as described, take care of charged statically which could harm them
5. Remove the Keyboard
6. Open (swing) the display panel in horizontal position (carefully as much as possible)
7. Remove the LED cover panel (disassembling the mentioned screws carefully in advance as described)
8. Remove plug of the Display
9. Remove the thin plug (cable) which serves as the charging connection for the RTC battery

You don’t have to put the RTC battery out, but take care to leave the plug unplugged for a while. This is important, because the BIOS CMOS circuit is still provided from a loaded capacitor, which holds his charged stage for a while. I suppose to wait for two hours until the capacitor (you won’t recognised them) is discharged and the BIOS CMOS circuit has lost its active set up content.

Carefully install everything back in reverse order. Plug in the power cord (not the battery at that stage, leave it still out after everything is working again).

By putting in the power cord, you may will hear two times that something happens inside. Just wait until the process of starting up appears. Selecting the F10 functional key, you should be able then to enter the BIOS set up procedure. Select the function to set up the bios in the standard mode. Store this and start again. Enter BIOS setup again using F10, set up Date and Time and other functions as f.e. boot order, …

Store the settings in store and restart mode. Everything should go well again (no password request appears).

In my case it worked fine that way, first time I did it, I mage the mistake not to wait (as described) enough, so the request for password entry still appeared. The second attempt as described was successful as I wished it would be. So good luck for you as well!