Best Solution
posted on Jan 24, 2008
Rank: Guru
Rating: 87%, 110 votes
None of the above. Sorry. All those "solutions" are "shooting in the dark". There is a definitive method of determining the problem here, without guesswork.
The "HP screen" you speak of is an "advertising mask" governed by the "quiet boot" option in BIOS.
This HP screen is shown INSTEAD of showing you exactly what BIOS is "doing" at that moment: First, a ROM checksum to verify BIOS is OK, then a quick system check of the most basic components, and if that goes well, the next thing it does is count AND check the RAM. Finally, after all that is done, it will look for a hard drive and query that drive for cylinder or LBA size, then look at MBR for sector zero, to find an operating system.
So here is what you must do to SEE all that taking place:
1. Make sure the system is TOTALLY cold (off, not in any ACPI state). Do this by pressing and holding the power button for 10 seconds, then release.
2. Remove Battery and the PSU (AC power supply)
3. Insert the PSU connector (only) this will also eliminate any battery problems. Batteries with dead cells can pull out so much current that you get slow boot/running performance. More on this later.
4. Now, start the computer, and keep pressing ESC key, quickly. It may start beeping. Stop and wait then.
5. Next, you will see a BLACK screen instead of HP screen. There will be some white text that scrolls. First the BIOS type and version. Next, RAM will be counted, and last, a HD will be reported. Last (or if any of the above have a problem) any errors will be reported. Some BIOS will specify the error, others will report it as "code XXX". Send me (post) this info, and I will analyze the problem.
NOTE: you can hit the PAUSE key at any time, to read the info, if it runs too fast for you. Then press PAUSE key again, to resume the BIOS data post process. Once you have reported back with any errors (as in step 5 above), we can also do this same thing with Windows, to "see" the black screen/errors reported as the PC boots.