I am an i.t guy and I have a lot of diagnostic tools to determine what's wrong.. also I have inserted the recovry disks that came with it.. none of the tools I have can see the hard drive at all and when I go to start up windows I get a blue screen flash really fast.. I can't see the screen or pause it

Does anyone have any ideas?

Hard drive is corrupted or has so many bad sectors it doesn't know whether its Arthur or Martha. OR is could be the motherboard, check the connections and reinstall windows or better yet run a repair. Try attaching this hard drive to another computer as a slave and see if it picks up. Use diag tools to test for bad sectors, these can normally be repaired. Otherwise if there is a virus you will have to reinstall completely.