I all else fails, check your MoBo manual and search for the "Clear CMOS jumper"
This will reset ALL CMOS (BIOS) settings to factory-standard, removing the password from your system.
The problem is that all custom settings will be lost as well, although the system should boot on the first found HDD as those will be auto-detected in POST before the boot-sequence.
At least you'll have a bootable pc, hopefully you'll be able to determine the issue further from there...
Little question: with "Wireless Adapter" you mean that little USB connector for your mouse/keyboard right?
(Is it Logitech, did you use Unifying software???)
Final tip, if you have a bootable system again, you can easily check your USB ports by using a standard USB stick and plug it in EVERY port to check auto-detection...
Dust is known to short out USB connectors, in that case you can forget the affected ports (usually in pairs of 2)...
EDIT: Step 1 would be, of course, MAKING SURE THE BATTERIES IN YOUR KEYBOARD AREN'T DEAD!!!
Edited by S3cS3arch3r, 10 July 2012 - 10:22 AM.