RAM modules have 120-288 gold-plated contacts along the bottom edge connector. These contacts transfer data between the memory chips and the motherboard at speeds up to 6400 MT/s (megatransfers per second) on DDR5 modules. When oxidation builds up on those gold contacts, you get boot failures, BSOD (Blue Screen of Death) errors, or Windows memory diagnostic messages about hardware problems. The computer can't read the RAM properly when the electrical connection degrades.

A pencil eraser removes oxidation from RAM contacts without damaging the gold plating. The soft rubber erases the thin oxide layer while leaving the metal surface intact. This same method works on any edge connector - graphics cards, PCIe expansion cards, M.2 SSDs, even old PCI cards. You need a clean pencil eraser (not one covered in pencil graphite), a lint-free cloth, and compressed air to blow away eraser residue.

Essential Tools for Cleaning RAM

Before you begin, gather the following tools to ensure a safe and effective cleaning process:

  • Phillips screwdriver

  • High-quality pencil eraser (such as Faber-Castell)

  • Lint-free cloth

  • Compressed air or an air compressor

  • Ground wrist strap (optional, but recommended for avoiding static damage)

Step-by-Step Guide On How to Clean RAM Contacts

Step 1: Prepare Your Workspace

  1. Power Down and Unplug : Ensure your computer is unplugged and all cables are disconnected.

  2. Reduce Static Charge : Touch the metal case of your computer to discharge any static electricity from your body.

  3. Open the Case : Remove the lid of the case. If your computer is dusty, clean the inside first to avoid contamination during the RAM cleaning process.

Step 2: Remove and Clean the RAM Modules

  1. Remove RAM : Carefully release the clips at the ends of memory slots and gently pull out the RAM modules. If a clip doesn't move, be extra cautious as it is designed to be fixed.

  2. Clean with Eraser : Place the memory on a clean, flat surface. Gently rub the contacts with the pencil eraser in short strokes until they appear clean. Flip system memory and repeat on the other side.

Using a pencil eraser on RAM contacts.

Step 3: Remove Eraser Residue

  1. Wipe the Contacts : Using the lint-free cloth, wipe the RAM contacts thoroughly to remove any eraser filings.

  2. Use Compressed Air : Blow off any remaining debris with compressed air. Tap memory modules module gently on a flat surface to dislodge hidden filings before the final air blow.

Step 4: Clean RAM Slots

  1. Air Blow the Slots : Use compressed air to clean out the RAM slots thoroughly. Ensure all dust and debris are removed, checking closely with a good light source.

Step 5: Reinstall memory

  1. Check and Align : Ensure the memory slots and modules are clean and free of debris. Align the RAM module with the slot, taking note of the notch position.

  2. Insert system memory : Carefully press memory modules into the slot until the clips click into place, securing the module.

Common Mistakes to Avoid

  • Avoid Touching Contacts : Never touch the RAM contacts with your fingers, as oils and static from your skin can damage them.

  • No Solvents : Do not use solvents or sprays on RAM contacts, as these can corrode or damage delicate metals.

  • Thorough Cleaning : Make sure to remove all eraser residue; leftover particles can cause connectivity issues.