gistfile1.cs

//CPU ID
string sQuery = "SELECT ProcessorId FROM Win32_Processor";
ManagementObjectSearcher oManagementObjectSearcher = new ManagementObjectSearcher(sQuery);
ManagementObjectCollection oCollection = oManagementObjectSearcher.Get();
foreach (ManagementObject oManagementObject in oCollection)
{
  sProcessorID = (string)oManagementObject["ProcessorId"];
}	
	
//HDD ID
ManagementObjectSearcher searcher = new
ManagementObjectSearcher("SELECT * FROM Win32_DiskDrive");
foreach(ManagementObject wmi_HD in searcher.Get())
{
	HardDrive hd = new HardDrive();
	hd.Model = wmi_HD["Model"].ToString();
	hd.Type  = wmi_HD["InterfaceType"].ToString(); 
	hdCollection.Add(hd);
}

//HDD SERI NO
ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");
foreach(ManagementObject wmi_HD in searcher.Get())
{
HardDrive hd = (HardDrive)hdCollection[i];
if (wmi_HD["SerialNumber"] == null)
	hd.SerialNo = "None";
else
	hd.SerialNo = wmi_HD["SerialNumber"].ToString();
}

//BIOS BILGILERI
ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_BIOS");
ManagementObjectCollection collection = searcher.Get();
var items = new List<Win32_BIOS>();
foreach (ManagementObject obj in collection)
{
    var item = new Win32_BIOS();
    item.BuildNumber = (string)obj["BuildNumber"];
    item.IdentificationCode = (string)obj["IdentificationCode"];;
    item.SerialNumber = (string)obj["SerialNumber"];
    item.SoftwareElementID = (string)obj["SoftwareElementID"];
    items.Add(item);
}