A couple of days ago I noticed my mouse (Logitech M505 wireless) was becoming unresponsive, so I changed the batteries as normal. The problem is, this failed to remedy it.
Went out and bought a wired Microsoft mouse (USB), plugged in, uninstalled the old Logitech drivers and installed the Microsoft one. Still failed to work.
The mouse doesn't appear under the HID in the device manager and Vista doesn't recognise the device when plugged in. I also tried to un-install all devices and install again. Still didn't work.
Tried several system restores and even returned it to factory settings (lost everything and drivers too). Installed it all again, yet still fails to work, though the sound of a USB device being plugged in and then out keeps playing.
Plugging in other USB devices (storage etc) works no problem, so there isn't an issue with the ports.
ALSO
During all this, I noticed the PC fails to turn off correctly. The screen goes blank as if no power is present, yet the LED fans around the case (including that on the CPU) are still on.
Any advice on trying to fix any of these would be brilliant. Almost lobbed the b****y thing out the window in frustration.
Went out and bought a wired Microsoft mouse (USB), plugged in, uninstalled the old Logitech drivers and installed the Microsoft one. Still failed to work.
The mouse doesn't appear under the HID in the device manager and Vista doesn't recognise the device when plugged in. I also tried to un-install all devices and install again. Still didn't work.
Tried several system restores and even returned it to factory settings (lost everything and drivers too). Installed it all again, yet still fails to work, though the sound of a USB device being plugged in and then out keeps playing.
Plugging in other USB devices (storage etc) works no problem, so there isn't an issue with the ports.
ALSO
During all this, I noticed the PC fails to turn off correctly. The screen goes blank as if no power is present, yet the LED fans around the case (including that on the CPU) are still on.
Any advice on trying to fix any of these would be brilliant. Almost lobbed the b****y thing out the window in frustration.

















Could be a cheap fix.