I recently upgraded my Lenovo ThinkPad T61p (Type 6457-BF5) with an Intel SSD 520 Series (180 GB), and installed Windows 10 Professional 64-bit (Build 16299) on it. The SSD provided great performance improvement, but I also noticed something strange - the system would freeze every a few minutes, with no or light access to the SSD. During the incident, the laptop's HDD indicator was constantly on for up to a minute, and the mouse cursor could sometimes be moved, but clicking on objects was unresponsive.
I searched online and found a relevant article entitled "Task Manager might show 100% disk utilization on Windows 10 devices with Message Signaled Interrupt (MSI) mode enabled" on Microsoft Windows 10 Support (https://support.microsoft.com/en-us/help/3083595/task-manager-might-show-100-disk-utilization-on-windows-10-devices-wit). The described symptoms seemed exactly the same as mine, so I followed the instructions to disable the MSI mode in the registry, and rebooted my laptop.
However, the problem persisted. I installed the Intel SSD Toolbox and my SSD is in perfect condition, with the firmware version of LE1i. I guess it might need a more suitable driver than the default one provided by Windows 10, but I did not find it on Intel's website. There might also be some other settings needing tweaking. Could you please advise how to resolve this problem? Many thanks in advance.