Fix the PCI-Express Firmware Bug

It was also discovered that a StorAHCI.sys driver was the cause of 100% hard drive usage. StorAHCI.sys is a type of program for storage devices that connect to a PC or laptop via the Advanced Host Controller Interface PCI-Express.

To do this, you will follow these steps:

1. Right-click Start and Open the Device Manager
2. Expand IDE ATA/ATAPI Controllers
   
3. If an AHCI Controller entry is listed, double-click, then open the Driver tab and select Driver Details.

If the driver is listed as C:\Windows\system32\DRIVERS\storahci.sys then this error may affect you. From there, follow the steps below:

1. Close the driver details box
2. In the Details tab, select Device Version Path from the drop-down menu
3. Right-click where the value is listed, and select Copy
4. Launch your text editor (like Notepad) and Paste the content
5. Next, press WIN+R and type regedit, then click OK
6. Find HKEY_LOCAL_MACHINE\System\ CurrentControlSet\Enum\PCI\ and use the string pasted from Notepad to open the correct AHCI Controller, followed by the random number.
7. Here, expand Device Parameters\Interrupt Management\ MessageSignaledInterruptProperties and you will see MSISupported listed in the right pane. Double-click this, then change the Value data: to 0. Click OK to confirm and follow the instructions to restart Windows.