I am troubleshooting a computer that had been working fine for about 3 months. Its a HP Vectra, 120 mhz, 16mg ram 1.2 gig hard drive. Windows 96 connected to a Novell Network and like I said it was working fine. A computer consultant came in to install Rumba (connectivity software to access our IBM AS/400). Something did not go right now when we boot up we get an error something like this: Windows Registry or System.ini refers to device file but device file no longer exists. C:\Windows\System\VMM32\NTKERN.VXD I check System.INI and found no reference to NTKERN.VXD. I searched for the netkern.vxd file and found it in Windows\System. I tried restoring the registry but it did not work. Any ideas short of reformatting the hard drive and reinstalling everything? Thanks for your assistance. PCSOFT: http://nospin.com or [log in to unmask]