Hi all, i want to delete 2 user accounts off my pc

First take off the side panel to get a clear view of the motherboard. Look to the lower right hand corner and see if there is a yellow buttonmarked CMOS. If there is, push it for ten seconds release and reboot. If there isn't, look for a three pin jumper socket marked CMOS, there should be a jumper plug sitting on two of the pins to short them out. Power down the computer, move the plug over to the reset mark, should be one pin over. reboot the computer. power the system back down and move the jumper back to its original state. reboot the computer and try to access the user accounts. It may still ask for a password, just hit enter. and try to get in now. If you can, sign in under one of the administrators accounts and go to your user name and make yourself an administrator, then delete the other accounts as you see fit.

Pull off the side panel, the reset button is on the mainboard in the lower right hand corner, yellow button marked CMOS. Push and hold for count of ten.
start the computer, then you will have to set the date and time in the BIOS.