|Sounds like you have installed a program that included an option to install Advanced System Care V 6.|
This is now very common to include other stuff during installs of a new program, one I have seen, installs the browser Chrome.
You do have a choice, it is just a matter of slowing down & reading during the install, no more Click, Click.
Uncheck all extra's during install, including toolbars.
With your power, check your settings.
Start > Control Panel > Power Options
Advanced Power Management.
Tick > Enable Advanced Power Management support.
Windows XP and Advanced Power Management (APM) Support
Power schemes, select > Home/Office Desk.
Turn off monitor : To suit
Turn off hard disks: Never
System standby: Never
Click on Advanced.
Options > Both unchecked.
When I press the power button on my computer > Shut down.
When I press the sleep button on my computer > Stand by.
If your computer is NOT a laptop/notebook then you can stop Hibernate.
Hibernation, reserves disk space equal to your RAM.