NEC Express5800 User Manual page 272

8-26 Troubleshooting
Fail to restart the system with the message means "pci.sys missing or corrupt" after you
executed "Updating the System" process to Windows Server 2003 x64 Edition or Windows
Server 2003:
During the application of the ChipSet driver by "Updating the System" process, the
driver for the USB device may be deleted.
Follow the process detailed below.
(1) Start the Recovery console.
(2) Copy "<Systemdrive>\system32\dllcache\pci.sys" to under
"<Systemdrive>\system32\drivers".
(3) Exit the Recovery console, and restart the system.
(4) Refer to "Recovery process" and follow to the process detailed to apply [Hotfix
for Windows x64 "KB921411"] or [Hotfix for Windows Server 2003
(KB921411)] and "Updating the System".
For "Recovery process", see Appendix F or Appendix G for details.
During installation, the following message is registered in the DMI Event Log:
PCI Express Correctable.
→ This message might be registered in the log during installation, but there is no
problem on operation.