Session 4: Upgrades: RAM & Storage

An upgrade fails most often at the compatibility stage, not during fitting. For RAM you need four facts: the type — DDR3, DDR4 or DDR5, which are physically incompatible and will not fit the wrong slot; the form factor — SO-DIMM for a laptop, DIMM for a desktop; the maximum capacity the board supports, which is a firmware and chipset limit rather than a physical one; and the speed, which must be supported, though a faster stick will usually run at a slower supported speed rather than fail.

Get these from the manufacturer's specification for the exact model, or read them off the installed stick, or use a system information tool that reports the board's capabilities. A machine with one slot plus soldered memory is a common arrangement on mid-range laptops, and it caps what you can do — which is why you check before quoting rather than after ordering.

For storage the questions are: does the machine have an M.2 slot, and if so does it support NVMe or only SATA over M.2 — these are different and an NVMe drive will not work in a SATA-only slot; is there a 2.5-inch bay for a SATA SSD; and is there room for both. Many laptops from roughly 2016 onward have an M.2 slot plus a 2.5-inch bay, which allows an SSD for the system and a hard drive for bulk storage — a genuinely good outcome for a customer with a lot of files.

RAM fits one way only, because the notch in the module is offset. Insert it at roughly a thirty-degree angle, push it in fully until the contacts are almost entirely hidden, then press it down until the two side clips click into place. If it needs force, it is the wrong way round or the wrong type. With two sticks, fill the matching slots — often marked or colour-coded — so the board can run them in dual channel, which gives a real performance improvement over two sticks in the wrong slots.

An M.2 SSD inserts into its slot at a shallow angle, then is pressed down and secured with a single small screw. Many machines ship without that screw, or with a plastic stand-off, and losing it is a common annoyance; keep spares. A 2.5-inch SATA SSD goes in the drive caddy or bracket, connected with a short SATA data cable and a SATA power connector, and must be secured so it cannot move — a loose drive in a laptop will eventually damage its own connector.

Throughout, the discipline from session two applies: mains unplugged, laptop battery disconnected first, wrist strap on, board handled by its edges. A RAM stick is cheap; a board damaged by static or by a screwdriver slipping is not, and the machine is the customer's livelihood.

Replacing a hard drive with an SSD raises the question of what happens to Windows and the customer's files. There are two answers. A clean install gives the best result — a fresh Windows, no accumulated cruft, genuinely the fastest outcome — but it requires reinstalling every program, and for a customer with many applications and a complicated setup that is a day of disruption they did not ask for.

Cloning copies the entire drive, including Windows, programs, settings and files, onto the new SSD, so the machine boots into exactly the same state, only faster. This is usually what a customer actually wants, and it is the professional default when the existing installation is healthy. The tools are free or cheap — manufacturers such as Samsung and Crucial ship cloning software with their drives, and there are reputable third-party utilities.

The catch is that the target must be at least as large as the data on the source, not necessarily as large as the source drive. A 1TB hard drive holding 200GB of data can be cloned to a 256GB SSD, and most cloning tools handle shrinking the partitions automatically. But a 1TB drive holding 400GB cannot go onto a 256GB SSD, and you must tell the customer that before they buy the drive — which is why you check used space, not drive capacity, when advising.

The procedure: connect the new SSD to the machine — in the second slot if there is one, otherwise through a USB-to-SATA or USB-to-NVMe adapter. Run the cloning tool, select source and target carefully, and start the copy. This takes from twenty minutes to a couple of hours depending on the amount of data. Then swap the drives physically, boot, and confirm Windows starts from the new SSD and reports the correct capacity.

The critical safety rule: the original drive is the backup until the clone is verified. Do not wipe, format or dispose of the original until the machine has booted successfully from the clone and the customer has confirmed their files are there. If the clone fails, the original is untouched and you have lost nothing but time. A technician who wipes the source first has converted a routine job into a data-loss incident.

Be honest with the customer about what cloning does and does not do. It copies everything — including whatever problems the installation already had. If the machine was slow because of malware or a corrupted profile, cloning carries that across, and the SSD will make it faster but not fix it. In that case a clean install is the right answer and you should say so rather than clone a broken system and be called back.

An upgrade you cannot demonstrate is a claim the customer has to trust. Verify concretely: check that the machine reports the new RAM capacity in system information, and that both sticks are detected; confirm the SSD is recognised at its full capacity and is the boot device; and measure the difference — boot time, and the time to launch a heavy program. Going from a ninety-second boot to fifteen seconds is dramatic and it is worth recording with a phone camera, because it is the evidence that justifies your fee and earns the referral.

Then run a short stability check. Boot a few times, open several applications, and confirm nothing crashes — a badly seated RAM stick often works initially and then produces random restarts, so a five-minute test catches it in your workshop rather than in the customer's office. On Windows, the built-in Memory Diagnostic is worth running after a RAM upgrade; it takes a few minutes and settles the question.

Finally, report honestly, including where the upgrade did not help. A machine whose slowness was caused by malware or a failing board will not be transformed by an SSD, and saying so plainly — 'the SSD is in and it boots faster, but the freezing you described is a separate fault and here is what it is' — is what separates a technician from someone who sells parts.