220-802 · Question #131
When the computer is turned on it emits a series of beeps and does not POST. This can be caused by a bad:
The correct answer is B. video card. POST beep codes indicate a hardware failure detected by the BIOS before video output is possible. A bad video card is the classic cause because the BIOS cannot initialize display output and signals the error via beeps.
Question
When the computer is turned on it emits a series of beeps and does not POST. This can be caused by a bad:
Options
- ACMOS battery.
- Bvideo card.
- CIDE cable.
- Dfloppy cable.
How the community answered
(17 responses)- B94% (16)
- D6% (1)
Why each option
POST beep codes indicate a hardware failure detected by the BIOS before video output is possible. A bad video card is the classic cause because the BIOS cannot initialize display output and signals the error via beeps.
A dead CMOS battery causes the BIOS to lose saved settings and revert to defaults, but it does not typically prevent POST or cause beep codes.
During POST, the BIOS tests core hardware including the video subsystem. If the video card fails initialization, the BIOS has no way to display an error message and instead emits a series of beep codes defined by the BIOS manufacturer (AMI, Award, etc.). This is one of the most common causes of beep-code-only failures with no screen output.
A bad IDE cable causes hard drive or optical drive detection failures after POST, not a failure during POST itself.
A bad floppy cable causes floppy drive detection errors, not a POST-halting beep code sequence.
Concept tested: BIOS POST beep codes and video card failure
Source: https://www.intel.com/content/www/us/en/support/articles/000005765/boards-and-kits.html
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