All of a sudden, my normally faithful Windows NT 4 installation has begun crashing with a STOP:00000007 error. It happened after the screen went blank for some reason while I was away from the computer. The computer wouldn't respond, and when I rebooted, I got the STOP error ("Inaccessible Boot Device") when I tried to load NT. As far as I can tell, all the files are still on the hard drive, because I can see them from Linux, which is on my other hard drive and can boot itself. I tried reinstalling NT to a different directory, but this didn't seem to modify the BOOT.INI file, so after the first reboot Setup also crashed with a STOP:7. I haven't yet tried reinstalling from scratch, but I am right now backing up my entire hard drive in case I do have to reinstall from scratch. There is a chance, and I really hope it is zero, that my hard drive is physically damaged, because I bumped the computer against another computer a short while before this happened. But I CAN see all the files from Linux, so that gives me hope.

how big is you harddisk and you partition?

I found this article on the Microsoft Web Site, though it is not your exact problem, it is similar and you might be able to make use of it with some modifications. (Because working before, perhaps just the file is damaged or it's spot on the disk is damaged.) Good luck, Gary This problem occurs because the Aic78xx.sys driver chosen during the application of Service Pack 4 is not compatible with the computer's Adaptec SCSI controller. RESOLUTION This problem can be corrected by replacing the existing Aic78xx.sys driver, located in the %systemroot%\Winnt\System32\Drivers folder, with the Aic78xx.sys driver from the i386 directory within Service Pack 4. Windows NT 4.0 Service Pack 4 contains the following Aic78xx drivers: Aic78xx.sys 26,704 bytes Aic78xx.001 56,272 bytes To determine which Aic78xx.sys driver is in use, and to copy the correct driver, depends upon the file system on the Windows NT boot partition (where %SystemRoot%\Winnt resides). If Windows NT resides on a FAT formatted partition, perform the following steps: Boot to MS-DOS by using an MS-DOS 6.x boot floppy disk. Change to the %systemroot%\Winnt\System32\Drivers folder. Compare the size of AIC78xx.sys with the table above. Replace the existing AIC78xx.sys file in %systemroot%\Winnt\System32\Drivers with the other AIC78xx file in the i386 directory within Serivce Pack 4. If AIC78xx.001 is copied, be sure to rename it AIC78xx.sys. If Windows NT resides on an NTFS formatted partition, perform the following steps: Either boot to a parallel installation of Windows NT or create a parallel installation of Windows NT. To create a parallel copy of Windows NT, perform a fresh installation of Windows NT to a different folder. From the parallel installation, look in the %systemroot%\Winnt\System32\Drivers of the failing copy of Windows NT. Compare the size of AIC78xx.sys with the table above. Replace the existing AIC78xx.sys file in %systemroot%\Winnt\System32\Drivers with the other AIC78xx file in the i386 directory within Serivce Pack 4. If AIC78xx.001 is copied, be sure to rename it AIC78xx.sys.