Just got a wireless keyboard and mouse.Medion md40273.Sometimes the pointer shoots off to either the top left corner of the screen or the bottom right corner. Seems to be which ever is the closest. Using xp pro. Anyway, checked everything but have no clue why this should happen. Anyone help?
Never known a wireless mouse and keyboard to work properly yet. Have two friends who bought them but both have now gone back to wired mouse and keyboard. You could try moving the receiver around (keep it away from anything that has a magnet in it, like speakers and monitors)
Have had a microsoft wireless desktop keyboard and optical mouse for over 12 months - no problems at all. If batteries are low on mouse you will get problems - change them - I find that mouse batteries are only good for 6 to 8 weeks of heavy use, keyboard lasted 10 months.
Like others above I've tried wireless mice before, both from Microsoft and Logitech and been disappointed by both. Interference from the computer and monitor plus power consumption above batteries ability seem to be the problems. Reducing graphics card acceleration may help, but I eventually found that it was the optical bit of the mouse that I liked and the wireless bit I could do without. Now have Microsoft Optical Blue which is terrific and has reasonably long cable to either USB or serial connector