You got a response in the other thread:
Originally Posted by Trotter
XP Black is a pirated version of Windows XP. Get legal, as in install a full licensed version, and we will see what we can do to help you.
From what I have read, some versions of XP Black come with malware.
I have closed both threads as we do not allow multiple posting of the same thread.
You need to install a legal version of Windows on the laptop, period. It should
have a Windows OEM license sticker on the bottom. You can use that serial number to reinstall whatever version of Windows originally came on the laptop provided you can find an installation disk for it (XP Home, XP Professional, Vista basic, whatever) as the serials are not interchangeable.
Once you are legit, we can help you out.
Incidentally, it sounds like your hard drive may be dying unless you aren't getting the BIOS text. If not, the mobo may be dying.