Cause 2: The hard drive partition is damaged The most common cause of this error is a hard drive that is too large to be supported by an outdated BIOS. This error has been known to occur as a result of one of the following causes: Cause 1: The hard drive capacity is too big The “Error loading operating system” error Causes of this Error There are no other known alternative messages for this boot error, except the “Error loading operating system” text that appears on your computer’s black screen at startup. Issues with your hard disk drive’s partition can also be a major cause.Īlternative error messages. This error shows when your computer’s BIOS doesn’t support the capacity of the hard disk where you are installing Windows XP or it’s not properly installed. Symptom 1: “ Error loading operating system” error screen on startup The error messages, alerts, warnings, and symptoms below are tied to this error.

The following information on this error has been compiled by NeoSmart Technologies, based on the information gathered and reported by our global network of engineers, developers, and technicians or partner organizations. 6.1 Fix #1: Use bootrec.exe and rebuild the BCD.

6 Fix Error loading operating system in Windows 7, Windows 8 and Windows 10.5.1 Fix #1: Run System Restore from the disc.5 Fix Error loading operating system in Windows Vista.4.1 Fix #1: Check your hard drive status in BIOS menu.4 Fix Error loading operating system in Windows XP.2.2 Cause 2: The hard drive partition is damaged.2.1 Cause 1: The hard drive capacity is too big.1.2 Symptom 1: “Error loading operating system” error screen on startup.1 About “Error loading operating system“.

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