Solving What I Considered A Serious Problem With TrueCrypting C: System Drive

[Nomen Nescio]

My operating system is Windows XP. I have my C: drive system encrypted
with TrueCrypt

I also have multiple external non system hard drives fully encrypted
with TC.

My problem has always been that I can set TC preferences to shut down
the external drives in a chosen amount of time, but the encrypted
system C: drive does not obey that command.

What good does TC do if something happens to you or you forget to turn
off your machine and the unencrypted C: is there for anyone to see?
Some tech smarty just might do some type of disk investigation and
just maybe find your passwords for the C: or the other drives buried
somewhere on the open C: drive. MS Windows is infamous for betraying info
in such a way. I solved that problem with a neat little program I
found here.

http://pc-sleep.com/
or
https://download.cnet.com/PC-Sleep/3000-2084_4-10652257.html

I've been using for some days now and it seems to work perfectly. It's
a great relief for what I considered a serious problem.
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Requirements:
Windows XP/2003/Vista/Server 2008/7/8/10

Additional Requirements:
MS .Net Framework 4.0 https://www.microsoft.com/en-us/download/details.aspx?id=17851
or
https://download.cnet.com/s/.net-framework-4.0/
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