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How to calculate hash MD5-SHA1-SHA-256-CRC32 in Windows Linux Mac and online

What they are  Hash are used in computer science to map a string (a sequence of bits) of arbitrary length into a string of predefined length.  It is a sort of ‘signature’ of an electronic document. For each string you can calculate a hash, so each different string will have different hashes.  However, calculating the …

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Slow PC? How to check on tasks that clog system interrupt and DPC requests

If we happen to see the PC is running slowly and, by opening Task Manager, we can see that the system interrupt consumes a lot of CPU, how can we determine which driver to remove?  What it is:  In fact, the interrupt is an asynchronous request that executes a hardware component following its synchronous (execution) event.  In case of an interrupt, …

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How to verify the security of certificates installed in Windows

Sigcheck is a useful tool provided free of charge by Microsoft to check your computer for harmful digital certificates.  You can download it from the Ms-TechNet website.   You can download it from the site, click on  How to use and once you have downloaded the tool and extracted the .zip, open a prompt window on the folder (by pressing the SHIFT key …

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