hi,plzs follow his steps.......
firstly we shall try to solve your problem through the software i,e operating system,your problem might be due to the operatin system not installed in proper manner,it might have left the drivers that r to be instaled during setup,for this u either reinstal the OS or u better change the OS to WIn 2000 or Win 98 and see,if this doesnt solve then move on to the hardware side,where u motherboard is instaled .firstly check for the connections on the conectors,if all of u r conections r correct,then the probelem might be in u r connectors of u r keyboard or u r mouse(some pin might have been damaged)get u r friends mouse or keyboard install it and checKif silll u do not get the solution check for u internal connections of u r motherboard connectors or either take u r motherboard to u r manufacture and ask him to test .........there might not be any problem with u r motherboard...just chech for OS,conectors ,PINS,Motherboard Connectors.....PLZS INSERT THE CONNECTORS IN THE PS/2 TIGHTLY OR CHECK FOR U R DRIVERS IN THE DEVICE MANAGER......