I've created a trigger to create child objects when a lookup field is changed on the parent object.  Instance: Parent Object =Laptop__c; Child object=Laptop_Update__c; Field=Location__c(Account). I was able to create and deploy successfully a trigger and class based upon creating a new Laptop and triggering the creatiion of the laptop updates, but when attempting to create a similar trigger and class based on information update on Laptop__c I ran into issues. Any assistance is appreciated.

Trigger:

trigger CreateIHSLaptopUpdate2 on Laptop__c (after Update) {
    List<IHS_Laptop_Updates__c> Updates = new List<IHS_Laptop_Updates__c>();
  
    //For each Laptop processed by the trigger, add a new
    //Update record for the specified user.
    //Note that Trigger.New is a list of all new Laptops
    //That are being created.
  
    for (Laptop__c updatedLaptop: Trigger.New) {
        if(updatedLaptop.Location__c !='0017000000bSTpd')
        if(updatedLaptop.Location__c !='0017000000YRiPy'){
            Updates.add(new IHS_Laptop_Updates__c(
                Type__c = 'AEP Software',
                Version__c = '2.36B ALI',
                IHS_Laptop__c = updatedLaptop.Id));
            Updates.add(new IHS_Laptop_Updates__c(
                Type__c = 'IHS Auto Software Update',
                Version__c = '1.55',
                IHS_Laptop__c = updatedLaptop.Id));
            Updates.add(new IHS_Laptop_Updates__c(
                Type__c = 'Central Internet Site',
                Version__c = 'N/A',
                IHS_Laptop__c = updatedLaptop.Id));
            Updates.add(new IHS_Laptop_Updates__c(
                Type__c = 'Manual',
                Version__c = '2.32',
                IHS_Laptop__c = updatedLaptop.Id));
        }
    }

    insert Updates;
}

Test Class:

@IsTest
private class TestTrigger3 {

    static testmethod void testtrigger() {
   
        //Add Account
        Account A = new Account();
            A.Name = 'Test';
           
        insert A;
   
        //Add Laptop
        Laptop__c L = new Laptop__c();
            L.Name = 'Test';
       
        insert L;
       
        //Update Laptop
            L.Location__c = a.id;
        update L;
    }
}