Still struggling after 4 months with a Dell Dimension 9600 running XP. Blue screens, ( STOP error 0x0000007B (OXF78D2524 OXC0000034, OX00000000, OX00000000),stalling when actually runnning. Tried everything - honest, see previous posts. Have installed new HDD, new motherboard, new RAM (all from Dell!) Still unable to install XP to new disk. Stalls to blue sceeen after loading files from recovery CD and starting WIndows to continue installation. Out of sheer desparation tried putting Vista on. No luck but installation now stalls and sometimes asks for a DVD driver. Tried giving it one but no luck. Only bit not changed in DVD drive (TSST Corp TS - H5553 has a mixed reputation. I am told) Given I have changed everything else, it a change of DVD drive the only option?