FAQ
TL;DR: For Asus R513C stuck booting to BIOS, 1 confirmed fix was a BIOS update — "from what I remember a new bios." This FAQ covers boot mode, disk detection, and getting USB/DVD to boot. [Elektroda, pcnet, post #17863122]
Why it matters: It helps Asus R513C (and similar) owners who ask “will a BIOS upgrade help?” fix no-boot, missing-boot-device, and UEFI/CSM issues fast.
Quick Facts
- Confirmed resolution: a user fixed the R513C BIOS-loop with a BIOS update. [Elektroda, pcnet, post #17863122]
- Enabling CSM showed “Insert Boot media,” and only one boot device (DVD) appeared in Boot Options. [Elektroda, pcnet, post #17190813]
- The disk was visible under Hiren’s as GPT; match UEFI mode to boot it. [Elektroda, pcnet, post #17190990]
- Error “BiInitializeLibrary failed 0xc00000bb” coincided with failure to boot from USB/DVD. [Elektroda, pcnet, post #17190990]
- Wrong BIOS date (e.g., 2012) pointed to CMOS battery; final fix was a BIOS setting change. [Elektroda, maniek763, post #18710145]
Will a BIOS update fix an Asus R513C that only boots to BIOS?
Yes, it can. One confirmed case in this thread was fixed by updating the BIOS. Use the exact R513C firmware from ASUS and a stable power source. Run EZ Flash from BIOS, not Windows, and avoid interruptions. After flashing, load defaults, then set boot mode. [Elektroda, pcnet, post #17863122]
Why does my Asus boot straight to BIOS instead of Windows?
Firmware does not see a bootable disk. If no storage is detected, the system enters BIOS. As one expert put it, “Your computer cannot see any disk.” Check connections and ensure the controller and mode are correct. Then confirm the disk appears in BIOS. [Elektroda, Stani12, post #18234261]
How do I fix “Insert Boot media” after enabling CSM?
Match boot mode to your disk. If your system drive is GPT, switch to UEFI and disable CSM. When only DVD shows under Boot Options, the HDD isn’t presented as bootable. Recreate install media for UEFI if needed, then retry. [Elektroda, pcnet, post #17190813]
My drive shows as GPT in Hiren’s — which boot mode should I use?
Use UEFI boot. The thread shows a GPT disk present while boot failed with legacy settings. Align the disk format and firmware mode to allow Windows Boot Manager to appear. After switching, save changes and reboot. [Elektroda, pcnet, post #17190990]
Why isn’t my HDD in Boot Options (only DVD listed)?
That means firmware sees only the optical drive as bootable. In the report, only one device (DVD) appeared in Boot Options. Ensure the storage controller is enabled and the disk is detected on the Information/Main page. Then set the correct boot mode. [Elektroda, pcnet, post #17190813]
What does “BiInitializeLibrary failed 0xc00000bb” mean here?
It indicates a boot initialization failure on this unit. In the report, it appeared together with an inability to boot from USB or DVD. Return BIOS to defaults, ensure UEFI mode, and test again with known-good media. [Elektroda, pcnet, post #17190990]
How do I reset the BIOS to factory defaults on the R513C?
Enter BIOS, load defaults, and save. 1. Power on and enter BIOS. 2. Choose Load Setup/Factory Defaults. 3. Save and reboot. This clears incompatible settings that block boot. Reapply only necessary changes after restart. [Elektroda, Anonymous, post #17190738]
Could a faulty keyboard force the laptop into BIOS every time?
Yes. A damaged keyboard can hold a key that triggers BIOS entry. Test by disconnecting it. How-To: 1. Unplug the internal keyboard ribbon. 2. Power on, using the power button or USB keyboard. 3. If it boots, replace the keyboard. [Elektroda, raftronik, post #17190710]
My HDD boots on another laptop but not here—what should I check?
Check BIOS mode and priorities. One user resolved the issue after a single BIOS setting change. Ensure UEFI is enabled for GPT disks, save, and reboot. If Windows Boot Manager appears, set it as first boot. [Elektroda, maniek763, post #18710145]
I can’t boot from USB or DVD—what should I try?
Use UEFI-compatible media and verify the firmware mode matches. The report showed USB/DVD boot blocked when boot initialization failed. Reset BIOS to defaults, set UEFI, and retry with a freshly created installer. [Elektroda, pcnet, post #17190990]
Should I enable CSM/Legacy to make Windows boot?
Not when the system disk is GPT. In the thread, enabling CSM produced “Insert Boot media.” Keep UEFI enabled for GPT drives, then set Windows Boot Manager first. [Elektroda, pcnet, post #17190813]
The BIOS clock shows 2012—should I replace the CMOS battery?
Yes. Replace the battery and set the correct date and time. Then recheck boot settings because defaults may change. If the disk still isn’t bootable, review UEFI/CSM configuration and Boot Options. [Elektroda, maniek763, post #18709558]
Is there a quick way to confirm the disk is detected without Windows?
Yes. Boot Hiren’s and check if partitions appear. In this case, the drive was visible as a GPT partition, confirming hardware detection. If partitions show, focus on firmware boot mode and entries. [Elektroda, pcnet, post #17190990]
Does this happen on Samsung too?
Yes, a user posted a Samsung that opened BIOS instead of Windows. The key finding was: “Your computer cannot see any disk.” Check disk detection first, then align boot mode to your disk format. [Elektroda, Stani12, post #18234261]
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