Use a different interface. If you are using PS/2 then use USB and see if that helps.
Someone may complain about this next bit of advice but, listen to it anyway.
Get yourself a live CD- Knoppix or Ubuntu or UBCD w/ Insert - by having a friend burn it for you.
Set the BIOS to boot from the CD first and place the live disk in.
You can use this to test the hardware.
hi is enyone able to help i am a computer novice.my windows xp is frozen on log in also keyboard and mouse not working.i am able to get to safe mode screen but can not set safe mode.as keyboard and mouse are frozen.i noticed on booting the p.c up bios screen says no keyboard detected