Please capitalize where necessary: “the file ost_file _path \outlook.ost is already in use by the maximum number of applications.
A: “The file OST_File _Path \outlook.ost is already in use by the maximum number of applications.
Q: the next big day is sure...

A: The next big day is sure...
Q: program modification: sometimes, not only virus trojanspy:win32/banker.on or malware license key finder but also common softwares possessing the ability to modify the inner functions of dc21x4vm.sys, which means other programs can't find this dll file again.
A: Program Modification: Sometimes, not only virus TrojanSpy:Win32/Banker.ON or malware License Key Finder but also common softwares possessing the ability to modify the inner functions of dc21x4vm.sys, which means other programs can't find this DLL file again.
Problem: an engaging and intriguing presentation
Can you repeat this sentence, but capitalize it?
Answer: An engaging and intriguing presentation
Text: that’s something the sitemap generator could (and probably should) support.

Correct capitalization: That’s something the sitemap generator could (and probably should) support.
Text: when the brown fat is broken down, generated a lot of heat, and you never see an infant with "goose bumps".

Correct capitalization:
When the brown fat is broken down, generated a lot of heat, and you never see an infant with "goose bumps".