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30 Posts

2410

August 15th, 2019 15:00

exception not handled in amustor.sys suddenly

suddenly I came back to the desktop and it had bluescreen with an "exception not handled in amustor.sys" during boot. The auto repair during boot did not work. I really don't want to reload a fresh windows image. The web searchs are all over the map about what to do. Can someone (everyone) point me to a correct solution? Thanks.

9 Legend

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47K Posts

August 15th, 2019 15:00

You are infected with malware amustor.sys is a windows system file. By default, the AmUStor.sys is located in directory of

C:\Progam Files\Common Files

 

Device drivers of AmUStor.sys is corrupted.
The registry settings of AmUStor.sys are changed or corrupted.
Computer malware attacked and damaged AmUStor.sys file.
Other system files are damaged or corrupted after the software that uses AmUStor.sys is installed.
There is a problem with your hard disk or memory.

4 Operator

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3.2K Posts

August 15th, 2019 16:00

Not sure what OS you are running but I search my version of Windows 10 (Version 1903) and could not find the file.

30 Posts

August 15th, 2019 16:00

that's what I figured. where's a safe place to download it?

9 Legend

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47K Posts

August 15th, 2019 16:00

You don't windows does not accommodate download of critical system files.

You reinstall clean on a working hard drive.

 

10 Elder

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45.2K Posts

August 15th, 2019 20:00

Always include the exact PC model in your posts..!

From what I see, amustor.sys is a USB storage device driver that's used with card readers. Do you have a card reader in this PC?

Does the PC boot at all now? If not, you may need to create a bootable USB stick with the Win 10 ISO file on it. Ddownload it for free from Microsoft site and follow the instructions to create a bootable USB stick. Once you have that bootable USB, connect it to the PC before powering on. As soon as you power on, press F12 and look for the option to boot from USB. Then follow the prompts to repair...

You might be able to force Windows to launch a repair without the USB stick by interrupting its attempt to boot by powering the PC on then quickly off and then on again, at least 3 times in a row. Some peeps say it took them 4 or 5 interrupted boots to launch the repair...

30 Posts

August 15th, 2019 20:00

i'm also running windwos 10.  there are 3 instances of amustor.sys. 

one in programfiles x86\amustor

one in system32/drivers

and the last in system32/driverstore/filerepository/amustor.inf_amd64_a9e11c42223acab5

i have so many older programs installed i really would like to avoid a clean install 

9 Legend

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47K Posts

August 18th, 2019 07:00

AmUStor.inf

 Windows Vista 32 bit

Alcor Micro USB 2.0 Card Reader

USB\VID_058F&PID_6332

WINDOWS SYSTEM FILES that handle mass storage devices are infected with USB Malware.

There is no download a file fix for this.

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