HP Pro Tower 480 G9 PCI Desktop PC Maintenance and Service Guide - Page 62
Drive not found (identified), Nonsystem disk/NTLDR missing message
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Cause Either the directory structure is bad or there is a problem with a file. Solution In Windows, type file in the taskbar search box, and then select File Explorer from the list of applications. In the left column, expand This PC, right-click a drive, select Properties, and then select the Tools tab. Under Error checking, select Check. Drive not found (identified) Use this information to troubleshoot the computer. Cause Cable could be loose. The system might not have automatically recognized a newly installed device. The device is attached to a SATA port that has been hidden in Computer Setup. Drive responds slowly immediately after startup. Solution Check cable connections. See reconfiguration directions in the Solving hardware installation problems on page 59 section. If the system still does not recognize the new device, check to see if the device is listed in Computer Setup. If it is listed, the probable cause is a driver problem. If it is not listed, the probable cause is a hardware problem. If this is a newly installed drive, run the Computer Setup utility, and add a POST delay under Advanced > Boot Options. Run the Computer Setup utility and be sure that Device Available is selected for the device's SATA port in Advanced > Port Options. Run Computer Setup and increase the POST Delay in Advanced > Boot Options. Nonsystem disk/NTLDR missing message Use this information to troubleshoot the computer. Cause The system is trying to start from the hard drive, but the hard drive might have been damaged. System files missing or not properly installed. Hard drive boot has been disabled in Computer Setup. Bootable hard drive is not attached as first in a multiple hard drive configuration. Bootable hard drive is not listed first in the Boot Order. Solution Perform Drive Protection System (DPS) testing in system ROM. 1. Insert bootable media and restart the computer. 2. Boot to the windows installation media, and select the recovery option. If only a restore kit is available, then select the File Backup Program option, and then restore the system. 3. Install system files for the appropriate operating system. Run the Computer Setup utility, and enable the hard drive entry in the Advanced > Boot Options list. If attempting to boot from a hard drive, be sure that it is attached to the system board dark blue SATA connector. Run the Computer Setup utility, and select Advanced > Boot Options, and be sure that the bootable hard drive is listed immediately under the Hard Drive entry. Computer will not boot from hard drive Use this information to troubleshoot the computer. Drive not found (identified) 55