Cursor disappearing, windowed mode (1 Viewer)

[Buceph]

MediaPortal Version: 1.1.3
MediaPortal Skin: default
Windows Version: Windows 7
CPU Type: i7 860
HDD: Kingston SSD
Memory: 6gb DDR3 1600mhz 3*2gb
Motherboard: Asus H55-UDH3
Video Card: ATI Radeon HD 5850
Video Card Driver: ATI Official 8.821.0.0
Sound Card:
Sound Card AC3:
Sound Card Driver:
1. TV Card: TBS 6920
1. TV Card Type: DVB S2
1. TV Card Driver: 1.0.4.9
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: Not too sure how to check the codecs but if someone lets me know how I can.
MPEG2 Audio Codec: I use the K-Lite Codec pack
h.264 Video Codec:
Satelite/CableTV Provider:
HTPC Case:
Cooling:
Power Supply:
Remote:
TV:
TV - HTPC Connection:


My problem is when I press alt-return, to put Media Portal in a window, half the time the cursor will disappear. And I can't get it back up. This isn't a htpc setup, so I only need Media Portal in a window, maybe I'm doing the wrong thing in using alt-enter to send it to a window.

I searched cursor and didn't find an answer.