Mice not recognized

[danbeaver]

Yes, check the key lock, if there is no key just unplug it from the front of the motherboard. Common problem.

[danbeaver]

Yes, check the key lock, if there is no key just unplug it from the front of the motherboard. Common problem.

. It is actually a 4 line, 5 point connector with a blank hole for orientation that connects the power LED.

In addition check your mouse, and the short & long cables at the back of the motherboard that connect the mouse port to the motherboard.

[danbeaver]

When it boots the cursor doesn't respond to any mouse clicks.
I have no capacity to measure voltage levels or solder things

In that case you may just want an expert to diagnose and repair your motherboard.  Castellen, AKA Anthony Hoffman, runs an Amiga repair service with thorough diagnosis and repair services (he has repaired four of my A4000D's and is waiting for a part on my A4000T) with quick turn around (<7 days).  His web site is: http://amiga.serveftp.net/ and email address is:

ahoffman(at)clear(dot)net(dot)nz