HP X4000b Bluetooth Mouse (H3T50AA) stops working if not moved for a while, then computer crashes

Question

I will be very happy if someone answers this, 'cos from all the other related posts, my outlook is pretty bleak. At least give me the thumbs up for trying, or a little human contact. Proof this post existed.
Alright, I (fairly) recently updated to windows 8.1on my Samsung quad-core notebook - Model is NP905S3G
For the full info- see the picture.
Anyway, the problem is, that ever since I installed Windows 8.1, if I don't move the mouse for around 1minute when it is on (i.e. I just leave it still for 1 min because I'm typing stuff), it stops working. Moving the mouse simply doesn't do anything. If I look on the 'devices' screen, it is still shown as connected, and I can try re-connecting it, but it doesn't work. Turning on and off doesn't work. Pressing that little blue 'connect' button doesn't seem to do anything normally, and in this case, does nothing. Un-installing and re-installing the mouse does not permanently solve the problem (but does restore connectivity, at least until I leave the mouse idle for too long again)
Currently, once the mouse has stopped moving on the screen, I press the power button (which for me makes my computer sleep). When I do this 1 of 2 things happen; either it goes to sleep as instructed, or it stays on indefinitely, and I have to hold the power button for 5 seconds to do an emergency shut-down. This is a pain, especially since nothing is saved, and the computer takes extra-long to turn on the next time.
The real problem is this: about five minutes after the mouse becomes unresponsive, the computer crashes. It is during this five minute period that I can save all my stuff, but if I have been typing non-stop, I may not even notice that the mouse has stopped moving, and so the computer often crashes at unpredictable times. This of course is a major annoyance, and what’s more, sometimes just when I click a link my mouse freezes, and I have to restart my computer or let it crash.
The crash message is DRIVER_POWER_STATE_FAILURE, and comes on a blue screen with a message saying the computer is collecting some error info, and a silly little smiley face. I have come to hate that smiley face.
If you’ve read this far, thank you very much, PLEASE FIND A SOLUTION, MY MOUSE IS PRETTY UNUSABLE AT THE MOMENT
PS. When I feel it is too risky to use a mouse, I use the touchpad. The setting where tapping=clicking really annoys me, and I also don’t like the inverted scrolling. I change these settings on my preferences, but for some reason they are never saved once I turn my computer on. They used to be saved before updating from Windows 8 to 8.1. Any suggestions?

Answer 1

Not actually solved. The problem still happens and isn't limited to me or my headset.
I just want this question out of my sidebar and this is the only way to do that!