We repair and upgrade the Lenovo ThinkCentre M900 Tiny at our workshop in Bermondsey, from power and start-up faults to storage upgrades and data recovery. It is a mini PC from 2015. Parts are matched to the exact chassis, so the model number matters when we quote.
- Model number
- M900
- Released
- 2015
- Type
- Mini PC
- Storage
- SATA bays and M.2, by configuration
- Memory
- DIMM slots
What we repair on the Lenovo ThinkCentre M900 Tiny
Power supply repair
A mini PC that shows no signs of life often has a failed external power adapter. We test with a known-good adapter before looking at the board.
SSD and storage upgrade
The Lenovo ThinkCentre M900 Tiny has room for SATA drives and, on most boards, an M.2 SSD. The usual upgrade is an SSD for Windows and programs with the old drive kept for storage.
Price confirmed before work starts
Memory upgrade
The Lenovo ThinkCentre M900 Tiny uses standard desktop memory. We check the board’s limits and fit matched modules.
Windows repair and reinstall
This model does not meet Microsoft’s Windows 11 requirements, and Windows 10 reached end of support in October 2025. We can advise on the realistic options, including a lightweight Linux or ChromeOS Flex installation.
We also carry out motherboard repair, overheating and fan repair, virus removal on the Lenovo ThinkCentre M900 Tiny, along with no-picture and no-boot diagnosis, port repair, Wi-Fi and Bluetooth card replacement and data transfer to a new PC.
What we see on the bench
- Tower and Small Form Factor models use Lenovo-specific power supplies, matched to the exact machine type.
- ThinkCentre Tiny machines use an external power adapter and laptop-style memory; many that seem dead only need a new adapter.
Data recovery from the Lenovo ThinkCentre M900 Tiny
Desktop drives are removed and imaged on our own equipment. If the Lenovo ThinkCentre M900 Tiny has more than one drive, or a RAID array, bring the whole machine so we can see how it was set up.
Estimate the cost with our data recovery calculator, or read about recovering files after a ransomware attack.
Where the Lenovo ThinkCentre M900 Tiny sits in the range
Its nearest relatives in the Lenovo ThinkCentre range are the older Lenovo ThinkCentre M73 (2013) and the newer Lenovo ThinkCentre M710q (2017).
Questions
Can the SSD or memory in the Lenovo ThinkCentre M900 Tiny be upgraded?
Drives can be added or replaced. Memory uses standard slots and can be increased.
My Lenovo ThinkCentre M900 Tiny will not turn on. Is my data lost?
Usually not. The drive is separate from the fault in most cases, and we can remove it and copy your files even if the machine itself is not worth repairing.
How much does it cost to repair a Lenovo ThinkCentre M900 Tiny?
Price confirmed before work starts. The exact figure depends on the part your machine needs, and we confirm it before any work starts.
Is a 2015 Lenovo ThinkCentre M900 Tiny still worth repairing?
It depends on the fault. A battery, SSD or charging socket is usually worth doing. A major board repair on an older machine may cost more than the machine is worth, and if that is the case we will say so.