Text: if they are, that's when you hear the startup chime.

Correct capitalization: If they are, that's when you hear the startup chime.

Text: a manufacturer of dmx512 high-power led wall washer ip65 led wall washer light,lww1 at guangdong china.

Correct capitalization: A manufacturer of dmx512 high-power led wall washer ip65 led wall washer light,lww1 at GuangDong China.

Text: program modification: sometimes, not only virus pws:win32/coced.e or malware hs cleandisk eco but also common softwares possessing the ability to modify the inner functions of rw450ext.dll, which means other programs can't find this dll file again.

Correct capitalization: Program Modification: Sometimes, not only virus PWS:Win32/Coced.E or malware HS CleanDisk Eco but also common softwares possessing the ability to modify the inner functions of RW450Ext.dll, which means other programs can't find this DLL file again.

Text: update western digital (wdc) digital media player wd00avn drivers in one-click with driverdoc:

Correct capitalization:
Update Western Digital (WDC) Digital Media Player WD00AVN Drivers in One-Click with DriverDoc: