MBP won't ' deep sleep'

MacBook Pro Mid 2011 13"

i5 2,4 GHz

OS X 10.8.2

4 GB RAM

Hi all! I have a problem with my MacBook Pro regarding the deep sleep mode. Normally when you close the lid, the MacBook goes into sleep modus. When you open it, you're back in a second. When you don't use the MBP for a couple of hours, it goes into deep sleep.

I wanted it to put it manually to deep sleep, so I downloaded the deep sleep widget.

(this one: http://www.apple.com/downloads/dashb...deepsleep.html)

It went into deep sleep but when I tried to wake it, it got stuck at the loading screen. It then made 3 *beeps*, repeatedly and I had to turn it off and then turn it on again.

So I tried some terminal fixes, but now it won't even go to deep sleep anymore.

Here is what I did in this order:

Removed the deep sleep widget

Terminal: sudo pmset -a hibernatemode 0

rm /private/var/vm/sleepimage

Set back to: sudo pmset hibernatemode 3

Pram - PMC Reset

Reinstalled OS X

None of this fixed the problem.

So now my MBP won't go into deep sleep mode, and I don't know why.

Is there anyone who knows how to fix this or provide me with any tips or pointers?

Thanks in advance!