First of all, from the tone and content of your posts, you seem to be
operating under the mistaken impression that 'this' is Microsoft.
It is not.
These are User to User support groups that happen to be hosted on Microsoft
servers.
Though genuine Microsoft employees might pop in from time to time to answer
a question or provide a tip, they are under no obligation to do so. Nor is
anybody else here obligated to do anything--it's all volunteer, and you seem
less than satisfied with the various responses you have been provided with
so far.
Secondly, for whatever reason, you decided that purchasing an HP computer
system was your best solution. Your beef is with them, not Microsoft--for as
an OEM, HP takes the support responsibility for both the hardware AND the
software that comes with their machines, not Microsoft. Your 'warranty' is
with HP. You should contact HP with whatever problems you may be having. Be
aware that a typical 'ultimate solution' from them will be to restore the
system back to the way it was when it left their hands (most likely from
your 'maxed out' D drive, which is likely to contain their restore image).
In the process, you will lose everything that you have installed, and any
other changes that you may have made to the system, good or bad.
If HP cannot address your issues to your satisfaction, you may be entitled
to return the machine to them for repair, replacement, or refund.
Good luck.