HP: Error codes

CAPS LOCK/NUM LOCK LED
LEDs blink 1 time – CPU not functional
LEDs blink 2 times – BIOS corruption failure
LEDs blink 3 times – Module error not functional
LEDs blink 4 times – Graphics controller not functional
LEDs blink 5 times – General system board failure
LEDs blink 6 times – BIOS authentication failure

Source : Blink codes on this page

SCCM: Computer collection based on Computer Name

This will list all computers where the name starts with IT or HQ

select
SMS_R_SYSTEM.ResourceID,
SMS_R_SYSTEM.ResourceType,SMS_R_SYSTEM.Name,
SMS_R_SYSTEM.SMSUniqueIdentifier,
SMS_R_SYSTEM.ResourceDomainORWorkgroup,
SMS_R_SYSTEM.Client from SMS_R_System where
SMS_R_System.Name like “IT%” or
SMS_R_System.Name like “HQ%”

Powershell: Rename remote computer with WMI

To rename a computer when Rename-Computer is not available (pre Powershell 4.0)

Get-WmiObject Win32_ComputerSystem -ComputerName OLDNAME -Authentication 6 |
ForEach-Object {$_.Rename(“NEWNAME”,”PASSWORD”,”USERNAME”)}

 

You can also mask the password

$credential = Get-Credential
Get-WmiObject Win32_ComputerSystem -ComputerName OLDNAME -Authentication 6 |
ForEach-Object {$_.Rename(“NEWNAME”,$credential.GetNetworkCredential().Password,$credential.Username)}