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Thread: Did brown out just kill my CPU?!
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11-23-2021 05:19 PM #1New ROGer Array
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Did brown out just kill my CPU?!
Just had a quick flash brown out during storm. My otherwise perfect PC of just over a year, running an i9 chip on Asus ROG Maximus XII, seems instantly damaged. Still running with RAM RGB lights and fans, and I hear normal drive sounds during boot, but motherboard is giving me error 7F ("reserved for future use" per manual) which then changes to "Check CPU". Meanwhile, monitor display is blank, no signal. How do I even begin to troubleshoot this, short of swapping out the CPU?? Please help! I've done cold reboots to no avail, same result. Thanks for any suggestions.
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11-23-2021 05:23 PM #2Moderator Array Nate152 PC Specs
Nate152 PC Specs Motherboard ROG Maximus IX Code Processor i7-7700k 5.2GHz Delidded Memory (part number) 16GB G.Skill Trident Z - 3600MHz 16-16-16-36-2T Graphics Card #1 Titan Xp - EKFC waterblock Sound Card ROG SupremeFX 2015 Monitor HP ZR30w Storage #1 Toshiba VX500 256GB CPU Cooler Swiftech Apogee GTZ Case Thermaltake Armor+ VH6000 Power Supply PCP&C Turbo Cool 1200w Keyboard ROG Falchion NX / Strix Flare II Mouse ROG Chakram X/Chakram Core/Spatha X Headset ROG Delta S Animate Mouse Pad Steelseries Prism XL + ROG Scabbard II OS Windows 11 Home Accessory #1 Asus optical drive Accessory #2 Koolance ERM-2K3U 
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Hi Brian72
Try shutting down your pc and turning off the psu switch for a few seconds, turn it back on and see if things return to normal.
Normally, psu's have protection against this.
Could try reflashing the bios if that doesn't help.Last edited by Nate152; 11-23-2021 at 05:26 PM.
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11-23-2021 05:37 PM #3New ROGer Array
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It worked!! Thank you! I hadn't tried unplugging the PSU and switching it off physically, just shut down / restart. Now I need to get my blood pressure back down. Thanks again!
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11-23-2021 05:39 PM #4Moderator Array Nate152 PC Specs
Nate152 PC Specs Motherboard ROG Maximus IX Code Processor i7-7700k 5.2GHz Delidded Memory (part number) 16GB G.Skill Trident Z - 3600MHz 16-16-16-36-2T Graphics Card #1 Titan Xp - EKFC waterblock Sound Card ROG SupremeFX 2015 Monitor HP ZR30w Storage #1 Toshiba VX500 256GB CPU Cooler Swiftech Apogee GTZ Case Thermaltake Armor+ VH6000 Power Supply PCP&C Turbo Cool 1200w Keyboard ROG Falchion NX / Strix Flare II Mouse ROG Chakram X/Chakram Core/Spatha X Headset ROG Delta S Animate Mouse Pad Steelseries Prism XL + ROG Scabbard II OS Windows 11 Home Accessory #1 Asus optical drive Accessory #2 Koolance ERM-2K3U
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You're welcome,
Good to see it was an easy fix.
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