Port 80 POST cards work very well, particularly for the low price. At a minimum they tell you if your board has life when it won't show video. After a few screwups you start picking up on what some of the codes mean so you can instafix. C1, that memory must not be compatible. If it's counting the low numbers then I probably forgot to switch the KVM.
I have several but the only one I actively use is a card by QiGuan.
there are 4in1 cards for laptops. So they fit every laptop mobo. I dont use it for the codes, but it is good to see clock and reset signals. and of course the codes work depending your experience with the card.
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