The link below has the information. The reason why Windows 7 doesn’t boot when you enable AHCI mode in BIOS is because Windows 7 disables the AHCI drivers during the installation.
How do I enable AHCI in Windows 7?
How to enable AHCI in Windows 7 after installation as ATA
- Start Windows 7.
- Run Registry Editor.
- Go to: HKEY_LOCAL_MACHINESystemCurrentControlSetServicesMsahci.
- Change the “Start” value from 3 to 0.
- Reboot and go to the BIOS immediately.
- Set BIOS to AHCI.
Can I install Windows 7 on AHCI mode?
These instructions assume you have Windows 7 already installed and the SATA channels are configured in IDE mode. 7) Go into your motherboard’s BIOS configuration and change the SATA mode from IDE to AHCI. … Save the new BIOS configuration.
How do I know if AHCI is enabled Windows 7?
Click the arrow next to “IDE ATA/ATAPI Controllers” to display the list of controller drivers currently used by your system. Check for an entry that contains the acronym “AHCI.” If an entry exists, and there is no yellow exclamation mark or red “X” over it, then AHCI mode is properly enabled.
Can Windows run on AHCI?
Right-click the Windows Start Menu once more. Choose Command Prompt (Admin). Reboot once more and Windows will automatically start with AHCI drivers enabled.
How do I fix AHCI BIOS not installed?
Re: “No device found AHCI BIOS not installed” Please Help
1) Run the Registry Editor (regedit.exe) click windows start button. Type in the box regedit then click on the regedit. 6) Then just exit out of Regedit then restart the computer. 7) Then go into the BIOS configuration screens and change the disk mode to “AHCI”.
How do I update SATA drivers on Windows 7?
To do so, follow the steps below.
- Press and hold the Windows key on your keyboard, then press R. …
- Type in “devmgmt. …
- Expand the “IDE ATA/ATAPI controllers” category. …
- Right-click on each of the listed items in this category, then select “Update driver.”
How do I change SATA mode to BIOS in Windows 7?
In UEFI or BIOS, find SATA settings to select the mode for memory devices. Switch them to AHCI, save settings and restart the computer. After the restart, Windows will start installation of SATA drivers, and when it is over, it will ask you for another restart. Do it, and AHCI mode in Windows will be enabled.
How do I get into the BIOS on Windows 7?
How to open the BIOS in Windows 7
- Turn off your computer. You can only open the BIOS right before you see the Microsoft Windows 7 logo when starting your computer.
- Turn on your computer.
- Press the BIOS key combination to open the BIOS on the computer. Common keys to open the BIOS are F2, F12, Delete, or Esc.
Do I need AHCI for SSD?
AHCI mode as previously explained enables NCQ (native command queuing) which is really not required for SSDs as they do not need optimizing in this way as there is no physical movement of heads or platters. In many cases, it can actually hinder SSD performance, and even reduce the lifetime of your SSD.
Is AHCI bad for SSD?
To answer your question, yes! Enable AHCI mode on your motherboard if you’re running a solid state drive. Actually, it wouldn’t hurt to enable it even if you don’t have an SSD. AHCI mode enables features on hard drives that maximize their performance.
Can I change from RAID to AHCI without reinstalling Windows?
There is in fact a way to switch operation from either IDE / RAID to AHCI within Windows 10 without having to reinstall. … Change the SATA Operation mode to AHCI from either IDE or RAID. Save changes and exit Setup and Windows will automatically boot to Safe Mode. Right-click the Windows Start Menu once more.
Which is better ATA or AHCI?
SATA devices perform better when configured as AHCI, rather than ATA; AHCI reduces the time it takes to save and open files on the hard drive via the native command queuing (NCQ) feature, which optimizes multiple read/write commands.