I've had the Logitech Wave MK550 for about two years now, and it has acted up twice on me now. Now being the second time, anyways. What is happening is the mouse and keyboard simply stop working on my computer, however, they work on the same computer on Arch linux, Ubuntu, on my laptop running Windows 7, Arch and Ubuntu as well.

I talked to Logitech tech support today, but that didn't go anywhere. We determined that Windows is finding the devices and installing the drivers appropriately, because they show up in the Device Manager. My PS/2 Keyboard works fine, along with another USB mouse that I am using in the meantime, so she really had no idea where to direct me.

Anyone have an idea as to where to go from here? I miss my keyboard

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Your not alone, I must ask is it an asus board? one person believed that it effected them more often. First must cleanup the device list and leftover hids Do the whole "Hidden Devices" tweak, then go into device manager, and select View Show Hidden Devices And get rid of the repeated ghost items in there, then reboot, and let it finish reinstalling anything important. – Psycogeek Jan 6 at 2:33
You got it! I'm on an Asus Rampage mobo. I'll try this out when I get home from school today, hopefully it works. You should probably put that as an answer :P – Tanner Jan 6 at 15:01
@Psycogeek Unfortunately, it didn't work. I removed all the hidden devices from Keyboards, Mice and other pointing devices, and HID compliant devices. Are there any others I need to remove? – Tanner Jan 6 at 20:09
yes clean up everything that is ghosted for being a repeat, or is no longer used at all ones you know. I have only one registry item So far, that sets how long a mouse/Key driver Hook is allowed to Hangup , win7 system being protective of bad driver. [HKEY_CURRENT_USER\Control Panel\Desktop] "LowLevelHooksTimeout"=dword:00002710 <-- time before it drops it. Because this doesnt happen on XP (as often) there has to be another parameter like the hooks for simple drivers that windows thinks hangs too ?? i have not found it. – Psycogeek Jan 6 at 22:37
Other possibilities, some kind of sleeping/standby going on, Try changing power managment of the whole device connection layer to that device? ?I would like to know how this Shows up in the devices, when it happens? does the item drop out, or is it an additional piece of software that the mouse/key uses? – Psycogeek Jan 6 at 22:44
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up vote 2 down vote accepted

Well, solved it myself. The problem had nothing to do in the end with the fact I am on an ASUS motherboard, it stemmed from the fact that I had MotionJoy drivers installed for using a Playstation 3 controller over USB. That works fine, however, the MotionJoy driver package also contains drivers for internal and USB bluetooth dongles, and Windows randomly decided to use the MotionJoy drivers for my mouse and keyboards USB receiver.

I solved it by going to the Control Panel -> Devices and Printers. Under the 'Unknown Devices' heading there was the USB receiver. Right click -> Properties -> Hardware -> Select HID Compliant Device -> Properties -> Under the General Tab, Change Settings -> Driver Tab, click Uninstall Driver, and check Delete this driver. Click OK, and restart the system.

Let me restate, this is only applicable if your USB mouse or keyboard is not working, and you have the MotionJoy drivers installed on your system. I didn't look for a workaround, because I do not use my PS3 controller on the computer anymore.

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