Member Avatar for walsterdoomit

hi i posted this in geeks lounge and then found this site...oops? Well, guys i dropped 9 hard earned bucks on this computer tester on ebay...lol how bad did i do? My biggest concern is...can it HARM my computer...ive got a paper weight to try it on now...i was curious to see if it could find the trouble( its the cpu ) i cooked it :twisted: oh well...id love to hear your thoughts...nothing on google at all. probably a very bad sign there... Great site! :icon_cool:

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Dani AI

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Short answer: the little PI50-style POST card you bought is unlikely to "cook" a PC by itself if used correctly, but it often won't give a definitive answer about a dead CPU. As noted, these devices mostly report BIOS debug codes and are best treated as a cheap diagnostic aid rather than a replacement for hands-on troubleshooting.

How they work and compatibility: most cards snoop the BIOS debug output (commonly writes to a debug I/O port or the LPC/PCI bus) and display the hex POST codes the firmware emits during early boot. That means the card must match the interface your board uses (ISA/PCI/LPC/USB or a debug header). Modern motherboards and laptops may not emit useful legacy codes, so the card can be blank or show garbage even if the board is otherwise fine. See background on POST and POST codes for reference: Power-on self-test.

Safe, practical steps to use it

  • Power down and unplug before installing. Use basic ESD precautions.
  • Fit the card only into the slot or header it was designed for; do not force it into incompatible slots.
  • Reduce the system to minimal components: CPU, one known-good stick of RAM, required power connectors, and video (if no onboard graphics). No HDDs or extra cards.
  • Power up and watch the code sequence. Note the final code shown or if it never advances.
  • Cross-check any stable code against your motherboard or BIOS vendor POST-code list (AMI/Award/Phoenix) to see which phase failed.

Limitations and follow-ups: a stall in a CPU-init code points to CPU, socket, VRM, or chipset power issues—further checks include inspecting pins/pads, verifying CPU fan/VRM power, testing with a known-good PSU or board, and swapping components where possible. If the card shows nothing, try the motherboard manual, onboard LEDs/beeps, or testing the card on an older spare board; cheap eBay cards can also be low quality or incompatible.

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Member Avatar for caperjack

hello ,i actually bought 2 different one over the years,latest one was for laptops / or PC .,and yes they do actually work ,well sort of . i have plugged them into many computers and never caused any damage.most time they only tell you what you all ready suspected ,if you have a bad CPU it will show that ,with error code ,manual shows code related to cpu .simple .it only reads the post codes of the bios i think .some motherboards have the 4 led light code on them . i havea laptop with a overheating problem ,but it wont tell me why it over heats ,because it actually boots up.anyway they were a cheap! novelty

Member Avatar for walsterdoomit

ya thanks!...what i was thinking..another toy lol...this 1 has the 4 digit post code LEDs plug into the perifal slot or usb...off topic but...your overheating if its over clocked,...no airflo,...or a cpu thats not seated correctly/ bad thermopaste. if its older...its most likely full of dust...:)

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