I'm currently dual-booting Windows 7 and Windows Vista on a DELL Inspiron 1525 with an SATA 250GB HDD. After beginning to boot up 7, I got BSOD with the error code: 0x000000F4 parameters: 0x00000003, 0x84DD9D90, 0x84DD9EDC, 0x8127A330 The message is: A process or thread crucial to system operation has unexpectedly exited or been terminated. Neither 7 nor Vista boot up completely. I get to the point where the cursor shows up on a black background, but a few seconds after that the error message shows up again. We've tried all available options for loading both OS's. I've had Windows 7 on my laptop for a few months now, and have never had this problem. I have not recently installed any new drivers or software, and no updates have been released for 7 (I rarely use Vista). We ran scans to detect hardware malfunctions, but everything went smoothly. Obviously, I'm guessing this is a logical error. I've tried putting in the Vista installation disk (I deleted the files for 7 installation), but after it loads up the files it just shows the background for the installation. No windows or anything. Is there anything that I might've done to cause these problems? Is there any way I can fix them?