What you'll need
1. New SSD (2.5-inch SATA or M.2 NVMe — check your laptop). 2. Screwdriver set (magnetic Phillips head). 3. External enclosure or USB dock (optional but helpful). 4. USB stick (8GB+) for Windows/macOS installer. 5. Thermal paste (tiny amount, sometimes pre-applied). 6. Backup of your data on external drive.
Before you start: Backup everything
Use File History (Windows) or Time Machine (Mac) to back up to external drive. Takes 30-60 min depending on data size. Don't skip this step — if something goes wrong, you need your files.
Step 1: Prepare your laptop
Shut down laptop completely. Unplug power. Remove battery (if removable). Let it sit 5 minutes to discharge static electricity. Wear grounding strap to avoid static damage.
Step 2: Open the laptop case
Most laptops have a bottom panel held by 4-8 screws. Locate hard drive bay (usually clearly labeled 'HDD' or 'SSD'). Take photo before removing anything. Label each screw location with tape.
Step 3: Remove old drive
If SATA: pull drive out at 45-degree angle, slide out. If M.2: unscrew retention screw, pull drive at angle. Keep old drive — you may need it. Set aside on anti-static bag.
Step 4: Install new SSD
SATA: slide drive in, screw down gently. M.2: insert at 30-degree angle, press down, screw retention screw. Don't over-tighten — snug is enough.
Step 5: Reinstall Windows/macOS
Plug in USB installer. Boot from USB (F2/DEL/ESC during startup). Follow Windows/macOS install wizard. Takes 15-30 minutes. New OS installs on new SSD.
Step 6: Restore your files
Once OS boots, use File History/Time Machine to restore from backup. Takes 1-2 hours depending on file size. Your apps and settings come back automatically.
Reassemble and test
Close the case, screw all panels back down. Boot up, verify in BIOS/System Settings that new SSD is recognized. Check disk space (should show correct capacity). Run speed test to confirm it's working.