Question Lightning Damage: How To Troubleshoot

Aug 10, 2020
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Hello. Last night lightning hit my house via the Cable. It came into the modem and blew away my UPS/Surge Protector (charred and smoking) and took out my cable modem, wifi router, my electric standing desk, and (strangely the rfid sensor on my fridge which detects if you have a filter in place). Finally it took out my PC. I tried booting it and got an A2 error, which is for the SATA devices. Once I removed my DVD drive and my WD hard disk, it proceeded to boot to a 99 code (my SSD might be okay). I removed all PCI-e devices and went down to CPU and just 1 stick of ram and still got 99. I then removed the CMOS battery and jumped the pins to clear CMOS. It took longer to boot but still booting only to 99. By the way, I disconnected external monitors and am just plugged into the mobo directly with HDMI, not getting any video signal.

Could a 99 just mean the Mobo is blown?

Here's the specific relevant components:
CPU: Intel Core i7-4790K 4 GHz Quad-Core Processor
Motherboard: ASRock Z97 EXTREME6 ATX LGA1150 Motherboard
Memory: Corsair Vengeance 8 GB (2 x 4 GB) DDR3-1600 CL9 Memory
Storage: Samsung 840 EVO 250 GB 2.5" Solid State Drive
Power Supply: SeaSonic 620 W 80+ Bronze Certified Fully Modular ATX Power Supply
 

Ralston18

Titan
Moderator
Reactions: 4powells
Aug 10, 2020
2
0
10
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A2 and 99 being "Dr. Debug" codes - correct?

Reference:

https://www.manualslib.com/manual/783366/Asrock-Z97-Extreme6.html?page=34#manual

Try testing the PCIe components and SATA devices in other computers.

Check the PSU also:

https://www.lifewire.com/how-to-manually-test-a-power-supply-with-a-multimeter-2626158

If the components work in other known working computers and the PSU test passes then the motherboard is very suspect.
I don't have any other computers. I will test the PSU right now.
 

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