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  1. #1
    ROG Junior Member Array
    Join Date
    Nov 2015

    Rebuilt PC, now it won't boot

    About 3 months ago I upgraded my PC, keeping only the case which housed my new parts. I kept the parts knowing I'd use them when I moved out as I'd leave the new build to my younger brother, which brings us to today. I've put together the old build but I can't get it to boot. The ASUS motherboard shows the orange light for BOOT_DEVICE_LED and code 99. I've tried resetting the CMOS, unplugging all connections, trying with and without GPU but I'm not making progress. Often nothing will show up on the monitor (I've got HDMI plugged into the mobo currently, tried plugging into GPU previously), but sometimes it will show the screen attached. I've never had a RAID setup. The attached hard drives don't have an OS, I was going to do this if it booted up lol. The mouse and keyboard are wired. I'll list the parts below for reference as well. Again, these parts all worked perfectly in March. I don't have access to my brother's computer/parts as we live in different cities. I've googled and tried various suggestions/solutions on the Asus forums, these forums etc which hasn't gotten me anywhere.

    Boot screen

    Pressing F1 or any key doesn't do anything. The LEDs on my mouse light up but not on the keyboard (I've tried other USB ports but still nothing).

    CPU: Intel Core i5-6600K 3.5 GHz Quad-Core Processor

    Cooler/fan: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler

    Mobo: Asus MAXIMUS VIII HERO ATX LGA1151 Motherboard

    RAM: Crucial Ballistix Sport 8 GB (2 x 4 GB) DDR4-2400 CL16 Memory

    PSU: Corsair TX 650 W 80+ Bronze Certified ATX Power Supply

    GPU: Asus 1070

    SSD: Samsung 840 Evo 120 GB 2.5" Solid State Drive

    HDD: Western Digital Caviar Black 640 GB 3.5" 7200RPM Internal Hard Drive

    Case: Cooler Master CM 690 ATX Mid Tower Case

    Any suggestions?

  2. #2
    Moderator Array Nate152 PC Specs
    Nate152 PC Specs
    MotherboardROG Strix Z690-F Gaming WiFi
    Memory (part number)Kingston Fury Beast 16GB (2x8GB) 6000MT/s (KF560C40BBK2-16)
    Graphics Card #1ROG Strix 3090 Ti LC OC
    Sound CardROG SupremeFX
    MonitorHP ZR30w
    Storage #1Seagate Firecuda 530 1TB
    CPU CoolerEK Quantum Velocity2
    CaseThermaltake Tower 900
    Power SupplyEVGA Supernova 1600 T2
    Keyboard ROG Falchion NX / Strix Flare II/Azoth
    Mouse ROG Chakram X/Chakram Core/Spatha X/Harpe Ace
    Headset ROG Delta S Animate
    Mouse Pad Steelseries Prism XL / ROG Scabbard II/Hone Ace
    OS Windows 11 Home
    Accessory #1 2x Swiftech Maelstrom X300 D5 V2
    Accessory #2 2x Hardware Labs SR2 560 MP radiators
    Accessory #3 Lamptron FC-5 V3 fan controller
    Nate152's Avatar
    Join Date
    Feb 2013

    Hi ish27

    Welcome to the ROG forum.

    Would you have another keyboard to try with?

  3. #3
    ROG Guru: Brown Belt Array RedSector73 PC Specs
    RedSector73 PC Specs
    Laptop (Model)FA506IU-AL130T x 2
    ProcessorAMD Ryzen 9 3900X 12-Core Processor
    Memory (part number)4 x G.SKILL F4-3800C14D-16GTZN 14-16-16-36 Samsung B-Die
    Graphics Card #1Gigabyte Aorus RTX 2080 Ti Xtreme WaterForce (GV-N208TAORUSX W-11GC)
    Sound CardArctis DAC
    MonitorAsus ROG Swift PG348Q
    Storage #1ADATA SX8200PNP 1TB
    Storage #22 x Samsung SSD 840 EVO 250GB
    CPU CoolerCoolermaster Liquid Pro Master 360
    CaseEVGA DG-87 Gunmetal Grey Gaming Case
    Power SupplyEVGA SuperNOVA G2 750W Gold Power
    Keyboard Corsair K95 RGB Platinum
    Mouse Corsair Gaming Sabre RGB Gaming Mouse
    Headset ARCTIS Pro Wireless
    Mouse Pad Cooler Master MP750 RGB Cloth Gaming Mouse Pad Extra Large
    OS Windows 11 64bit Pro
    Network RouterPfSence Intel i5-10210U 6 Port
    Accessory #1 TP-Link Gigabit 8&6 Port Switches

    Join Date
    Apr 2018

    Quote Originally Posted by ish27 View Post
    About 3 months ago I upgraded my PC...

    Any suggestions?
    Try replacing the BIOS battery with a new one.

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