HP remote control & wireless presenter

I've HP laptop 6820ee,... the Remote Control was working fine till i removed the driver by mistake from device manager... i reboot the laptop and then windows detected it as it was before.. but the device is not listed in mouse devices and now it doesnt work at all :S... Please help me how to get it back and the drivers needed...
Second, I have mini wireless presetner.. when i plug the reciever in the USB,.. windows detects is normally and list it as many HID devices and also as a mouse and as a keyboard device... but still it doesnt work at all... :S
Please Help Me...

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