<!-- from fixya rte -->Owners manual emachine KB-0705 - Computers & Internet

SOURCE: my key board wont work. it is an emachine model kb

You need to let me know if it is USB or not ,If it is USB the first thing I would do is to plug it into a different USB port and see if will reload if not then you will have to replace the keyboard it can be any brand and if you go to Amazon.com or Tiger direct.com you can chose from may types and price range

joecoolvette

• 5660 Answers
• Posted on May 28, 2012

SOURCE: keyboard stopped working

http://www.ascendtech.us/emachines-kb-0705-ps-2-keyboard-black_i_kbdemkb0705bps2.aspx

Things I see here.
1) The second Keyboard you plugged wasn't any good either.

2) The PS/2 port for your keyboard on your motherboard, isn't any good anymore.
Computer off, plug it into the Mouse PS/2 port, and use a USB mouse.
BIOS will reset the I/O address for that PS/2 port, and set it for the Keyboard, when the computer is turned back on.

You may have to;
A) Turn the computer off
B) Unplug from power.

C) Press the Power On button in, and hold it in for a count of 10 seconds. Let go of the Power On button. Do this same procedure two more times.

What you are doing is draining residual power, clearing CMOS Error Codes, and resetting BIOS back to the factory default settings.

Keyboard plugged in, USB mouse plugged in, plug the computer back into power. WAIT 1 minute, turn the computer on.

Still no?
Motherboard replacement.

You didn't unplug the old Keyboard, WITH the computer on, and plug the new Keyboard in, did you? It isn't a hot-swap device. The computer must be off when unplugging a mouse, or keyboard.

For additional questions please post in a Comment.
Regards,
joecoolvette