hard drives dying



Hello.
Can a virus render a hard drive 'useless'? So that you can't boot WindowsXp
or recover with any bootdisks?
And can it be totally undetected?

My laptop suddenly switched itself off and after numerous attempts just
comes up with
"No hard drive detected"
A week later my son's tower PC (winK) was playing up, then one day would not
reboot, saying disc sector corrupt. We had to pay an arm and a leg to a tech
to recover all his work and get a new hard drive.
Now my beloved PC is gone weird. Everything to do with start-up, taskbar and
system is taking around 10 minutes. It's not hanging, it's like in slow
motion.
It takes 40 minutes to reboot.
I am paranoid that it's also going to go. BUT the laptop was very old, my
son's PC not as well taken care of, Both those machines were running McAfee
9 but new subscription were 2 weeks overdue.
Whereas my machine is a year and a half old, it is treasured and has ALL
the right protection, McAfee security suite, SpyDoctor, MSAntispy, (which
have all come up with 0 when doing scans)
I can't believe that it can be coincidence.
But if I have all this protection, how can it be a virus!!?
Any advice please,
Jen



.



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