Member Avatar for 81griffinIT

compaq evo 510 sff;

getting 7 bios beeps, a little research tells me to replace AGP card, but i get these beeps even pulling the card out. shouldn't i be able to at least get to bios to switch to use "on board" video? replaced memory but that wasn't it.


any idea's

is the MOBO dead?

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As and touched on, start with a calm, methodical approach: identify the POST pattern, remove variables, then reintroduce parts one at a time. A concise reference for mapping beep patterns to BIOS vendors and their meanings is helpful: Computer Hope - Beep Codes. For background on what POST checks do, see Power-on self-test - Wikipedia.

Practical checklist:

  1. Note the exact beep pattern and identify the BIOS vendor printed during POST if possible.
  2. Try a minimum configuration: PSU, CPU, one stick of known-good RAM, and the video output you want to test. If the system will not POST with a card removed, try the same card in a different known-good machine to rule out the card vs. slot.
  3. To restore onboard video defaults, use the motherboard/service manual to find the CMOS-clear jumper (preferred) rather than guessing. If a manual is not at hand, powering down, unplugging, removing the coin cell for several minutes, and shorting the reset header while pressing the power switch are standard reset options — but follow the OEM guide where possible.

If the firmware does not expose an "onboard/primary display" option, the service manual will also show jumpers or default behavior. If everything else fails, test the power supply and consider a BIOS update only if the update notes mention video-related fixes; flashing carries risk and should follow the vendor procedure exactly. Take anti-static precautions when handling components and keep notes of each step to avoid unnecessary replacements.

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Member Avatar for Chaky

Maybe you need healthy AGP card to be able to switch back to on-board VGA via BIOS settings... or simple clearing the CMOS via jumper (that is usually located near BIOS battery) would do the trick, giving that the on-board video is enabled by default.

Member Avatar for 81griffinIT

Thank you, earlier this morning i did fix the problem. It was infact the AGP card but even a healthy one wasn't functioning right away, after a cmos clear all is well.

Although cannot seem to find in the bios where to turn back to onboard video. oh well no worries.

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