Computer Keeps Restarting at Windows Starting Screen

AHCI Setting, BIOS Setup, Configuring BIOS, restarting, Sata Controller, Windows 10 -

Computer Keeps Restarting at Windows Starting Screen

The most likely culprit is the SATA operations settings of the unit, which can be adjusted within the BIOS.

Make sure that none of the RAID-enabled options are selected, and that the drive is set up to use either ATA2 or AHCI mode. You should change the setting to the opposite option, if it is already set to use one or the other.

Setting the controller mode in the BIOS

Use one of the following sections to set the SATA Controller Mode for a hard drive.
BIOS version 6 or less
In BIOS version 6 or less, you set the SATA Controller Mode on the Advanced tab. Follow these steps to set the controller mode.
  1. Turn off the computer and wait five seconds.
  2. Turn on the computer.
  3. When the first screen displays, do one of the following:
    • Immediately press the F10 key if your computer was built in 2006 or later. Press the key once every second until a BIOS Setup utility screen opens.
    • Immediately press the F1 key if your computer was built before 2006. Press the key once every second until a BIOS Setup utility screen opens.

  4. Use the right and left arrow keys to select the Advanced tab.
  5. If you want to set AHCI or RAID mode, make sure that the SATA Controller (or SATA1 Controller) is set to [Enabled].
    To change the setting, use the up and down arrow keys to select the current SATA Controller setting, and then press Enter. Select[Enabled] or [Disabled], and then press Enter.
  6. Use the up and down arrow keys to select SATA Controller Mode (or SATA1 Controller Mode), and then press Enter.
    NOTE:
    If SATA Controller Mode is not displayed or if it cannot be selected, you cannot change the mode.
  7. Select the AHCI mode, and then press Enter.
  8. Press F10 to save the values and exit. Press Y to confirm before exiting.
BIOS version 7 or greater
  1. Turn off the computer and wait five seconds.
  2. Turn on the computer.
  3. Immediately press the F10 key repeatedly, about once every second, until the Computer Setup program opens.
  4. In the BIOS Setup utility, use the Right Arrow key to select the Storage tab.
    Figure : Storage tab
  5. Use the Down Arrow key to select Storage Options, and then press Enter.
  6. Next to Sata Emulation, select the controller mode you want, and then press F10 to accept the change.
This can also be caused by mismatched RAM in the system. Please open the unit and check the memory for any inconsistencies in speed, brand or capacity. If removing the mismatched modules causes the unit to boot correctly, you will need to have the RAM replaced.

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