I know this looks like a no-brainer question, but after asking all the techs who maintain our computers at work there's still no clear cut answer:
Should I physically turn off the computer every night (which I have been doing) - or leave it on and use the power-saving scheme available through the display/screensaver menu? I use the computer every day. I have a surge protector everything is plugged into. The computer is less than a year old, but recently the power supply/fan went out and had to be replaced. The tech said that even with the surge protector you can get enough power spikes over time to damage the power supply.
The hard drive is again making similar grinding & whirring noise when I first power on -- it dies down after a few minutes, but could it be the power supply again?