Shutting itself off & Won't Boot up

[SparksStar]

I did the upgrade to ICS when it came out and been experiencing some random shutting down and locking up ever since. Hasn't been terrible but somewhat annoying. I've also had it randomly not power on when I hit the power button and I have to plug it into the charger to get it to start up.

I just pulled it out to look up something and all it is doing is blinking the Eee Pad Asus Startup Screen. I can't get it to stop! Of course I left the charger home so I can't plug it in to see if that will make it stop.

Any ideas?

 

[SparksStar]

Update: Well I managed to get it stop blinking the start up screen by doing a reset (power+volume up button) but now it won't turn on.

 

[sloan31]

Had similar problem, hold down the power button until it boots...might take about 10 seconds.