Please capitalize where necessary: in the case that your xlnk file doesn't open, it is highly likely that you do not have the correct software application installed on your pc to view or edit xlnk file extensions.
A: In the case that your XLNK file doesn't open, it is highly likely that you do not have the correct software application installed on your PC to view or edit XLNK file extensions.

Q: in practice, the standard way of speaking spanish in the media is "written spanish" for formal speech, "madrid dialect" (one of the transitional variants between castilian and andalusian) for informal speech.

A: In practice, the standard way of speaking Spanish in the media is "written Spanish" for formal speech, "Madrid dialect" (one of the transitional variants between Castilian and Andalusian) for informal speech.

Q: wifi is available in the business centre and is free of charge.
A: WiFi is available in the business centre and is free of charge.

Problem: this creates a mellowing effect against the cool of the natural stone and glass materials.
Can you repeat this sentence, but capitalize it?
Answer: This creates a mellowing effect against the cool of the natural stone and glass materials.

Text: industry product, in aluminium, for recessed/surface/pendant/wall mounting, impact classification ik9, ip66, light source led, lumen out 34896lm, ballast type hf, with light source type cri>80, 4000k, 0.3 meter cable, with wieland m plug, optic type xnb, with heat soak tested tempered glass diffuser, needsqc to be complete.

Correct capitalization: Industry product, in Aluminium, for Recessed/Surface/Pendant/Wall mounting, impact classification IK9, IP66, light source LED, lumen out 34896lm, ballast type HF, with light source type CRI>80, 4000K, 0.3 meter cable, with Wieland M plug, optic type XNB, with Heat soak tested tempered glass diffuser, needsQC to be complete.

Text: when there is a human disaster and someone needs help and support, the community can take action quickly due to a fast-paced exchange of information.

Correct capitalization:
When there is a human disaster and someone needs help and support, the community can take action quickly due to a fast-paced exchange of information.