Well, now that you made me stare at my computer for 60 seconds, I can say it looks normal to me.  The light on my rig blinks with varying intensity and speed. Very pretty blue. ("MS-We never sleep")

Should you be worried? YES. You're supposed to be looking at the monitor, not the tower!

EEEEEERRRRRRKKKKKKKK!!!!!!!!!!!!!!!!!

Erk lurks...lol! Hi Erk!

I don't know where to find out if search indexing is on or off. Is there a benefit to keeping it on?

Kona, if you search "search" from the start menu and then select change how windows searches, it should take you to a place where you can find out what you need to know. I really didn't look much further into it, I just searched "search" because Erk mentioned search indexing........

BTW..........

Hello Erk!

....okay, now back to lurking........

No prob!

.....and now I keep looking at the blinking light too.........

What??

Services/ Windows Search: Disable it.

It is perfectly normal for the LED light to blink occasionally, at random intervals. There are things in an OS that you just cannot see or control that are important to the operations of that OS. If it is always a constant light, going on and of almost continuously all the time, then other factors may be involved, but as to what those may be could vary, like a defrag program running, or unfortunately even a system Trojan or virus.

Nothing to worry about. It's just a RPM gauge for the hamster wheel.

Mine blinks almost every second too Kona, sometimes quicker and brighter occasionally too even when I am not doing anything, but I do not worry about it. Probably just a service the OS needs to run that you cannot control.

...........................you hope....

Are you aware that Windows 7 has a service called Superfetch that tries to memorise user habits and pre-loads applications to memory so that they are available for fast start? If your schedule is consistent (for example you read mails from 6-8 p.m., and start playing Counter Strike after 8 p.m. every day), you should experience very fast system response. The downside is of course a lot of IO activity - your drive does not stop. Also, some background defrag is running when your own activity is not IO heavy.