Search for sys files:
 

WHICHOS.sys



File Version : 3.00.04
Description : ZyAIR B-100 Wireless NDIS 5.0 Driver
Copyright : Copyright , ZyXEL Communications Corporation
Product Version : 3.00.04.0207
Product Name : ZyAIR B-100 Wireless LAN PC Card
Company Name : ZyXEL Communications Corporation
Internal Name : ZLPCMNDS.sys
File Size: 641630 byte(s) 626.606 KB
MD5 : bbc94266c410a743d49f731bdca26744
SHA1: 438894F97A0EED2D1A8348C2426AC7E0962798C5



Download WHICHOS.sys
Click here to run a free scan for WHICHOS.sys related errors


How to Install WHICHOS.sys
Repair Sys ProblemsFixing a corrupted or missing WHICHOS.sys error is an easy process with a few steps. Open the zip-file you downloaded.Extract the .sys file to a location on your computer. We recommend you to unzip the file to the directory of the program that is requesting the file.
If that doesn't work, you will have to extract the file to your system directory.
By default, this is C:/WINNT/system32/drivers (Windows NT/2000).
or C:/Windows/system32/drivers (Windows XP, Vista, 7).
Make sure overwrite any existing files (but make a backup copy of the original file)
That should be it. Although not necessary you can reboot your computer as well.