How to locate the fault point on a fiber optic cable without tools

24 port switch with Allied Telesys Quality

There are expensive cable testing tools that tell us quickly and reliably what fiber cable is failing sending the light signal, but do not usually indicate where it has been broken. 
But with a simple trick we can see which section of the connection is broken , just using a powerful chip CREE LED Flashlight XML-T6 and the ability of the fiber to transmit any light waveform trhough it.
At one end we put the flashlight focusing terminations:

Blurry text in Google Chrome and other Aplis after installing Windows 10: How to fix it

Windows 10 by default applies a display configuration and scaling according to the screen size that we have, which may result in a neat desk, but in some computers the applications could be all with blurry text, as if it were not using the native resolution of the screen, despite having drivers and well detected screen. To fix this and get and clear view in Windows 10, we just have to follow these steps :

Computer with dropbox slows: Usage Tips

I recently repaired a computer that "slowed down" a lot to boot. It was a laptop with Celeron, quite outdated already. What was my surprise that the cause that produced this problem was they had shared a folder several gigabytes of information in Dropbox  (videos and photos on vacation)  and not a virus; the users wanted to backup everything in the cloud, so that every time Dropbox was checking changes, the hard drive was "going crazy".

Prevent the hard drive of your ultra portable to be damaged by shocks: Change it for an SSD

Top conventional disk 1.8 "; under SSD 1.8"

In this ultraportable Compaq Mini 700 10.2-inch screen was broken hard disk 4.57-cm (1.8 inches). These very compact and manageable laptops are susceptible to small bumps and tear that ultimately damage the hard drive, so you'll change your hard disk by another 80GB SSD (virtually immune to shock flash memory) for a 60GB € 60 purchased on Ebay.

In the SSD careful with the brand that you acquire (OCZ, Kingstom, Samsung etc) ; to save you can be buying one with low quality components that are damaged in a few months). They are still very expensive and low capacity  (that is changing at the speed of light ) for use on a desktop, but thanks to its low power consumption, shock resistance and high speed access will eventually imposed on notebooks .