Having installed C&C generals I got blue screen "IRQL_NOT_LESS_THAN_OR_EQUAL_TO", then when rebooted bleeps said graphics card error. Bought new graphics card and motherboard (Biostar NF4UL-A9).. Computer booted but got message eroor loading OS. The system will not boot from a windows CD, so to format the hdd it was recommended I use a win 98se custom boot disk. Having tried that, I now get the screen: Verifying DMI pool data......... Starting windows 98... The following file is missing or corrupted: HIMEM.SYS There is an error in your CONFIG.SYS file on line 1 The screen the switches to: DR-ROM Device Driver for IDE (Four Channels Supported) (C) copyright Oak Technology Inc. 1993-1996 Driver Version : V340 Device Name : BANANA Does this mean that the driver for my CDRW is corrupted. Since it will not bring up the a: promt i cannot format the hdd or run fdisk. The promt comes up however with a boot disk created by windows XP, but obviously this does not have fdisk on. Plkease can someone help me as I am not used to working outside of windows and am completely stumped.