sachostw.exe is a known malware utility. Backup your system and delete this file, or perform a free scan of your system to be certain.

sachostw and Trojan.W32.Looksky can cause major problems with the security of your system, and need to be scanned and deleted. Adware and malware can be very tricky. Malware creators know their files will be deleted if found, so they sometimes give the files names that are similar to known legitimate files.

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Since sachostw.exe was found on your system, there is a good chance that more malware is lurking. Using this free system scanning toolis a good way to avoid any future problems with adware and malware.