Hi everyone, Within the last 5 or 6 weeks I have experienced the BSOD frequently. I reinstalled XP 2 days ago to try and rid the problem, but it still remains, all-be-it, slightly different, i.e. before the reinstall the BSOD was kernel_stack_inpage_error and kernel_data_inpage_error. Now the error is driver_irql_not_less_or_equal with a STOP error: 0x000000D1 (0x00000009, 0x00000002, 0x00000000, 0x00000009) I have tested memory with memtest and windows memory tester and no problems came up. I have also tested my primary and secondary HD's with no errors. About 2/2 1/2 months ago I installed an Nvidia Geforce 6200 256mb GFX card. My specs are AMD Athlon 1.25Ghz Nvidia Geforce 6200 256mb 386mb PC2100 RAM Primary HD is Seagate 80GB IDE and slave is Maxtor 120GB IDE. 300W power supply. Is it possible that with teh installation of the new GFX card that my power source is not large enough to cope or sometyhing similar with the RAM? The crashes only seem to occur when the computer is idle, i.e. if I am actively using applications/games/internet, crashes do not occur. 6 minidumps are listed as you sendit sorry, hope they are relevant! http://s55.yousendit.com/d.aspx?id=0LDEKVSY63DW2Z3Q0LKUP96NP Cheers for the help.