How much for system cd. emachine 1200 05w s/nd 100500383902cd001 snid 83800389630

If you have done a Factory Recovery, all your date is gone. You have formatted the HDD. You must start from the beginning, do all your Windows and eMachine updates. In Windows 7 you will find a folder, "Windows.old", after you have finished ALL the updates, do a Search for Windows.old, you will find SOME of your old data. If the Laptop didn't complete the Recovery process, try again. Where did you download the e728 Recovery disk from? Is it a boot disk? A ISO disk? You may have to contact eMachine support, using your Serial Number, order a Factory DVD to return the Laptop to Factory Settings.

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Your ps/2 port probably died. Buy a USB keyboard.

nope recovery disks are either made specific to your computer or come from vendors otherwise they don't work too well

When the notebook boots up, press f2 for setup and choose restore default settings on the bios screen

if ur reg_sz data is not working means there is problem of virus in your comp.

ND means "No Disc". It's probably a newer CD - one that's been copied, perhaps? It's got a format newer than what the CD player on that unit will recognize. Try an older CD.

Uninstall the drivers and install this software . Driver Max, for that do a google search and install the driver max software. This software automatically detects all the hardware components in your computer and installs the relevant drivers for them.

RD probably stands for "Reading Disc" and ND probably stands for "No Disc". If the CD player doesn't recognize any discs, then either the laser is dead or the motor has died. MOst likely you will have to replace the unit.