SOS Informatique Computer repair in Lyon - Individuals and businesses

Windows Repair and Installation

Whether you are a business or an individual looking to repair your Windows computer, you can trust us to meet all your needs. Our aim is to provide outstanding service to troubleshoot and repair your computer.

Installing and reinstalling Windows (7, 8.1, 10 and 11) is part of our everyday work: setting up a clean system, recovering your files, reinstalling your software and drivers, then fully configuring the machine so it starts afresh on a healthy footing.

We also deal with boot failures, blue screens, failed updates and the slowdowns of a cluttered system. Before any reinstall, we always try to back up your data first. Free diagnosis, then a clear quote: you decide with full knowledge of the facts.

What we handle on Windows

The operating system is behind a good share of the faults described to us as hardware problems. A computer that takes three minutes to start, shows a blue screen or refuses an update does not necessarily have a physical problem: more often it is Windows that needs attention.

  • Clean installation and reinstallation, with full transfer of your data and your software.
  • Will not start: black screen, restart loop, startup repair.
  • Repeated blue screens and freezes, often down to a driver or failing memory.
  • Updates that are stuck or fail over and over.
  • Accounts and passwords: forgotten password, Microsoft account locked out.
  • Slowness: startup programs, a full disk, a cluttered system - see slow computer.
  • Migration to Windows 11 and compatibility check.

The end of Windows 10 changes things

Windows 10 no longer receives security fixes. A machine left on it becomes progressively vulnerable, with nothing on screen to say so. We always check whether your hardware will take Windows 11: when it will, the migration is free and keeps your data. When it will not, there are alternatives, and we explain them rather than pushing you toward a replacement. See moving to Windows 11.

Reinstall or repair?

Repair is enough in most cases, and it is what we try first: it keeps your software, your settings and your habits.

A full reinstall becomes necessary when the system is too far gone - repeated infections, damaged system components, a machine grown unstable over the years. It takes longer, but the result is clean and lasting. Either way, your data is backed up first, and transferred afterwards.

Windows in a business

The stakes shift. An office machine has to rejoin the network and find its shared folders, its printers and its business software again - a reinstall that misses one of those leaves the user stuck for another day.

So we handle the whole environment: access rights matching the person's role, business email, inclusion in the central backup, and identical configuration from one machine to the next when several arrive together. See workstation setup and IT asset management.

What we check while we are there

Work on Windows is a chance to check what otherwise never gets looked at: the health of the disk, how much memory is really available, whether the antivirus is active and up to date, and above all whether a backup exists. Those four points explain most of the faults we see coming back.

See also our pages on home IT support, moving to an SSD and automatic backup.

Frequently asked questions

Will I lose my data during a reinstall?

No. Your documents, photos and email are backed up before any work, then transferred to the refreshed system. Software does have to be reinstalled.

Is my machine compatible with Windows 11?

It depends on the processor and on whether a security chip is present. The check takes a few minutes and we always do it before proposing anything.

How long does a reinstall take?

Allow half a day to a day depending on the volume of data and the number of programs to put back. Transferring the files is the longest part.

Do I have to buy a new Windows license?

Usually not: the license is tied to the machine and reactivates automatically after a reinstall. We check before starting.

Can't find your question? It may be in our full FAQ.

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