I know this is an old thread, but this might be helpful.

I have a HP TouchSmart IQ815 with a SG sata 500gb drive. The computer
is still under warranty, and before it runs out I will probably contact
HP about the issue, however here is my solution:

From time to time I get the same errors as described in this forum. I
have experienced a lockup, received a blue screen, a black screen, a
windows recovery notice, and also a notice at boot that an OS did not
exist. In three months all these errors have happened about 4 times.
When these errors happen you cannot access the recovery partition
either. Plus if you use the recovery disks you will also get an Error
100a message. You would think after all these errors that it would be
something major, but all I do is turn off the power, unplug power
supply, remove my back cover, and wiggle the power cable and sata cable
that is connected to the drive. I barely wiggle it, and just make sure
it’s all the way in. While I’m in there I also do a quick dust cleaning
with a can of compressed air. I know it sounds ridiculous, but
seriously it must either be the connectors on these drives or the
cables. I would like to add that the cable is routed through the frame
in such a way that it has nothing to do with the motherboard in my
situation, like I said I simply make sure the connections are all the
way in the hard drive. So far this has not happened when I was doing
something important, but at an average of once per month, it can be
annoying. The cables have clips that you must press to release, but they
still seem like they could be tighter after you snap them in. I know
back in the not too distant past, techs use to put craft glue on
connections to keep them from creepin loose, lol maybe its worth a
try?

I’m sure some of you may have different issues, but maybe this will
help someone.


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SyberBrat