diff --git a/samy.js b/samy.js
index aec1fa9..f735a18 100644
--- a/samy.js
+++ b/samy.js
@@ -82,10 +82,13 @@ document.addEventListener("DOMContentLoaded", () => {
     });
   });
 
-  // Default tab from PS (onboard/offboard/tweaks/SVSApps)
+  // Default tab from PS (onboard/offboard/devices)
   const defaultTabId = `${defaultPage}Tab`;
-  const defaultBtn = document.querySelector(`.tab-button[data-tab='${defaultTabId}']`);
+  const defaultBtn = document.querySelector(
+    `.tab-button[data-tab='${defaultTabId}']`
+  );
   const defaultTab = document.getElementById(defaultTabId);
+
   if (defaultBtn) defaultBtn.classList.add("active");
   if (defaultTab) defaultTab.classList.add("active");
 });
@@ -105,6 +108,7 @@ function toggleColumn(col) {
     cb.checked = master.checked;
   });
 
+  // fire change handlers
   setTimeout(() => {
     children.forEach((cb) => {
       cb.dispatchEvent(new Event("change"));
@@ -117,19 +121,21 @@ function updateSelectAll(col) {
     `selectAll${col[0].toUpperCase() + col.slice(1)}Checkbox`
   );
   const children = document.querySelectorAll(
-    `#onboardTab input[type=checkbox][data-column=${col}]`
+    `#onboardTab input[type=checkbox][data-column="${col}"]`
   );
 
+  if (!master) return;
   master.checked = Array.from(children).every((cb) => cb.checked);
 }
 
 document.addEventListener("DOMContentLoaded", () => {
   ["left", "right"].forEach((col) => {
     document
-      .querySelectorAll(`#onboardTab input[type=checkbox][data-column=${col}]`)
+      .querySelectorAll(`#onboardTab input[type=checkbox][data-column="${col}"]`)
       .forEach((cb) =>
         cb.addEventListener("change", () => updateSelectAll(col))
       );
+    updateSelectAll(col);
   });
 });
 
@@ -182,6 +188,7 @@ function toggleDattoRMMOptions() {
   const master = document.getElementById("installDattoRMM");
   const container = document.getElementById("installDattoRMMOptionsContainer");
   if (!container) return;
+
   const checked = master?.checked;
   container.style.display = checked ? "block" : "none";
   container
@@ -200,9 +207,7 @@ document.addEventListener("DOMContentLoaded", () => {
 
   if (passwordField && goButton) {
     passwordField.addEventListener("keydown", (e) => {
-      if (e.key === "Enter") {
-        goButton.click();
-      }
+      if (e.key === "Enter") goButton.click();
     });
   }
 
@@ -211,9 +216,7 @@ document.addEventListener("DOMContentLoaded", () => {
 
   if (siteDropdown && runButton) {
     siteDropdown.addEventListener("keydown", (e) => {
-      if (e.key === "Enter" && siteDropdown.value) {
-        runButton.click();
-      }
+      if (e.key === "Enter" && siteDropdown.value) runButton.click();
     });
   }
 });
@@ -223,11 +226,11 @@ document.addEventListener("DOMContentLoaded", () => {
 // =======================================================================
 async function fetchSites() {
   const pwdInput = document.getElementById("Password");
-  const pwd = (pwdInput?.value ?? "").trim(); // allow blank, normalize whitespace
-
-
+  const pwd = (pwdInput?.value ?? "").trim(); // allow blank
 
   const dropdown = document.getElementById("dattoDropdown");
+  if (!dropdown) return;
+
   dropdown.innerHTML = '<option disabled selected>Loading sites...</option>';
 
   try {
@@ -237,19 +240,19 @@ async function fetchSites() {
       body: JSON.stringify({ password: pwd }),
     });
 
-    if (!resp.ok) throw "HTTP " + resp.status;
+    if (!resp.ok) throw new Error("HTTP " + resp.status);
 
     const sites = await resp.json();
 
     if (!Array.isArray(sites) || sites.length === 0) {
-      dropdown.innerHTML =
-        '<option disabled selected>No sites returned</option>';
-      alert("No Datto sites returned. Verify credentials/allowlist, or try again in a moment.");
+      dropdown.innerHTML = '<option disabled selected>No sites returned</option>';
+      alert(
+        "No Datto sites returned. Verify credentials/allowlist, or try again in a moment."
+      );
       return;
     }
-    
-    dropdown.innerHTML = "";
 
+    dropdown.innerHTML = "";
     sites.forEach((site) => {
       const option = document.createElement("option");
       option.value = site.UID;
@@ -257,13 +260,14 @@ async function fetchSites() {
       dropdown.appendChild(option);
     });
 
-    document.getElementById("dattoRmmContainer").style.display = "block";
+    const rmmContainer = document.getElementById("dattoRmmContainer");
+    if (rmmContainer) rmmContainer.style.display = "block";
   } catch (e) {
     console.error(e);
-    dropdown.innerHTML =
-      '<option disabled selected>Error loading sites</option>';
-    alert("Failed to fetch sites. Check password or confirm your public IP is allowlisted.");
-
+    dropdown.innerHTML = '<option disabled selected>Error loading sites</option>';
+    alert(
+      "Failed to fetch sites. Check password or confirm your public IP is allowlisted."
+    );
   }
 }
 
@@ -275,7 +279,6 @@ let allPrinters = [];
 // POST /getprinters with password from Devices tab
 async function fetchPrinters() {
   const pwdInput = document.getElementById("PrinterPassword");
-  
   const pwd = (pwdInput?.value ?? ""); // allow blank
 
   const clientContainer = document.getElementById("printerClientContainer");
@@ -283,12 +286,8 @@ async function fetchPrinters() {
   const dropdown = document.getElementById("printerClientDropdown");
   const checkboxContainer = document.getElementById("printerCheckboxContainer");
 
-  if (dropdown) {
-    dropdown.innerHTML = '<option disabled selected>Loading clients...</option>';
-  }
-  if (checkboxContainer) {
-    checkboxContainer.innerHTML = "";
-  }
+  if (dropdown) dropdown.innerHTML = '<option disabled selected>Loading clients...</option>';
+  if (checkboxContainer) checkboxContainer.innerHTML = "";
   if (clientContainer) clientContainer.style.display = "none";
   if (listContainer) listContainer.style.display = "none";
 
@@ -309,27 +308,22 @@ async function fetchPrinters() {
       return;
     }
 
-    // Build unique sorted ClientCode list
     const codes = [...new Set(allPrinters.map((p) => p.ClientCode))].sort();
 
-    dropdown.innerHTML = "";
-    const defaultOpt = new Option("Select a client...", "", true, true);
-    defaultOpt.disabled = true;
-    dropdown.appendChild(defaultOpt);
+    if (dropdown) {
+      dropdown.innerHTML = "";
+      const defaultOpt = new Option("Select a client...", "", true, true);
+      defaultOpt.disabled = true;
+      dropdown.appendChild(defaultOpt);
 
-    codes.forEach((code) => {
-      dropdown.appendChild(new Option(code, code));
-    });
+      codes.forEach((code) => dropdown.appendChild(new Option(code, code)));
+    }
 
     if (clientContainer) clientContainer.style.display = "block";
   } catch (e) {
     console.error("fetchPrinters error:", e);
-    if (dropdown) {
-      dropdown.innerHTML =
-        '<option disabled selected>Error loading clients</option>';
-    }
+    if (dropdown) dropdown.innerHTML = '<option disabled selected>Error loading clients</option>';
     alert("Failed to fetch printers. Check password or confirm your public IP is allowlisted.");
-
   }
 }
 
@@ -354,12 +348,10 @@ function renderPrintersForClient(clientCode) {
     label.style.display = "block";
     label.style.marginBottom = "4px";
 
-    //Install-Checkbox
     const cb = document.createElement("input");
     cb.type = "checkbox";
     cb.id = id;
 
-    // stash all fields we might need later
     cb.dataset.clientCode = p.ClientCode;
     cb.dataset.profileName = p.ProfileName;
     cb.dataset.displayName = p.DisplayName;
@@ -373,14 +365,10 @@ function renderPrintersForClient(clientCode) {
     const nameText = p.DisplayName || p.ProfileName || "Unnamed printer";
     const locText = p.Location || "Unknown location";
 
-    // Line 1: install checkbox + printer label
     label.appendChild(cb);
     label.appendChild(document.createTextNode(" "));
-    label.appendChild(
-      document.createTextNode(`${nameText} (${locText})`)
-    );
+    label.appendChild(document.createTextNode(`${nameText} (${locText})`));
 
-      // Line 2: radio for "Make default"
     const defaultWrapper = document.createElement("div");
     defaultWrapper.style.marginLeft = "24px";
     defaultWrapper.style.fontSize = "0.85em";
@@ -389,7 +377,7 @@ function renderPrintersForClient(clientCode) {
     const radio = document.createElement("input");
     radio.type = "radio";
     radio.name = "defaultPrinter";
-    radio.value = id; // associate default choice with this checkbox/printer
+    radio.value = id;
 
     const radioLabel = document.createElement("span");
     radioLabel.textContent = " Make default";
@@ -416,7 +404,6 @@ async function installSelectedPrinters() {
     return;
   }
 
-  // See which radio is checked for "Make default"
   const defaultRadio = container.querySelector(
     'input[type=radio][name="defaultPrinter"]:checked'
   );
@@ -432,7 +419,6 @@ async function installSelectedPrinters() {
     ShareName: cb.dataset.shareName,
     DriverName: cb.dataset.driverName,
     DriverInfPath: cb.dataset.driverInfPath,
-    // Only the printer whose checkbox id matches the selected radio gets SetAsDefault=true
     SetAsDefault: defaultId !== null && cb.id === defaultId,
   }));
 
@@ -446,20 +432,16 @@ async function installSelectedPrinters() {
     if (!resp.ok) throw new Error("HTTP " + resp.status);
 
     const result = await resp.json().catch(() => null);
-
     console.log("Printer install result:", result);
-    
   } catch (e) {
     console.error("installSelectedPrinters error:", e);
     alert("Failed to trigger printer install.");
   }
 }
 
-
 // =======================================================================
 // Run Selected (main trigger)
 // =======================================================================
-
 async function triggerInstall() {
   const runBtn = document.querySelector(".run-button");
   if (!runBtn) return;
@@ -470,13 +452,13 @@ async function triggerInstall() {
   if (statusBox) statusBox.innerHTML = "";
 
   try {
-    // Grab special-case elements ONCE
+    // Special-case elements ONCE
     const dattoCB  = document.getElementById("installDattoRMM");
     const svsCB    = document.getElementById("installSVSMSPModule");
     const renameCB = document.getElementById("renameComputer");
     const newNameInput = document.getElementById("txtNewComputerName");
 
-    // Standard tasks are all tasks EXCEPT special-case ones
+    // Standard tasks = all tasks except special-case ones
     const checkedTasks = tasks.filter((t) => {
       if (["installDattoRMM", "installSVSMSPModule", "renameComputer"].includes(t.id)) return false;
       const cb = document.getElementById(t.id);
@@ -489,7 +471,6 @@ async function triggerInstall() {
     if (svsCB && svsCB.checked) specialTasks++;
 
     const extraTasks = (renameCB && renameCB.checked) ? 1 : 0;
-
     const total = checkedTasks.length + specialTasks + extraTasks;
 
     if (total === 0) {
@@ -554,15 +535,45 @@ async function triggerInstall() {
       }
     }
 
-    // 4) Rename computer (LAST)
+    // 4) Rename computer LAST
     if (renameCB && renameCB.checked && newNameInput) {
       const newName = newNameInput.value.trim();
 
       const nameIsValid =
         newName.length > 0 &&
         newName.length <= 15 &&
-        /^[A-Za-z]()
+        /^[A-Za-z0-9-]+$/.test(newName);
 
+      if (!nameIsValid) {
+        alert("Invalid computer name. Must be 1-15 characters and only letters, numbers, and hyphens.");
+        logProgress("Rename computer", false);
+      } else {
+        try {
+          await fetch("/renameComputer", {
+            method: "POST",
+            headers: { "Content-Type": "application/json" },
+            body: JSON.stringify({ newName }),
+          });
+          logProgress("Rename computer", true);
+        } catch (e) {
+          console.error("Error calling /renameComputer:", e);
+          logProgress("Rename computer", false);
+        }
+      }
+    }
+  } catch (e) {
+    console.error("triggerInstall fatal error:", e);
+  } finally {
+    runBtn.disabled = false;
+
+    // Best-effort notification to the server
+    try {
+      await fetch("/tasksCompleted", { method: "POST" });
+    } catch (err) {
+      console.warn("Could not notify server about completion:", err);
+    }
+  }
+}
 
 // =======================================================================
 // Shutdown handler (Exit button & window close)
@@ -574,9 +585,7 @@ function endSession() {
 // Sub-options auto-toggle, tagline rotation, and beforeunload hook
 document.addEventListener("DOMContentLoaded", () => {
   // Sub-option containers
-  const tasksWithSubOptions = document.querySelectorAll(
-    '[id$="OptionsContainer"]'
-  );
+  const tasksWithSubOptions = document.querySelectorAll('[id$="OptionsContainer"]');
 
   tasksWithSubOptions.forEach((container) => {
     const taskId = container.id.replace("OptionsContainer", "");
@@ -602,7 +611,7 @@ document.addEventListener("DOMContentLoaded", () => {
     updateVisibility();
   });
 
-  // NEW: Rename computer checkbox -> show/hide text box
+  // Rename computer checkbox -> show/hide text box
   const renameCheckbox = document.getElementById("renameComputer");
   const renameBlock = document.getElementById("renameComputerBlock");
 
@@ -654,8 +663,7 @@ document.addEventListener("DOMContentLoaded", () => {
   }
 });
 
-
 // notify server on window close
 window.addEventListener("beforeunload", () => {
   fetch("/quit", { method: "GET", keepalive: true });
-});
\ No newline at end of file
+});