About Subtronics LLC

Subtronics LLC is a local computer repair and custom PC business based in Flushing, Michigan, built around practical help, honest advice, and real one-on-one service.

Hi — I’m Martin.

I run Subtronics LLC and I’m usually the person you’re talking to — and the person doing the work. Most people call me when their computer is slow, crashing, overheating, or they’re not sure what upgrade actually makes sense.

My goal is simple: fix the problem without wasting your money. If a repair is worth it, I’ll tell you why. If it’s not, I’ll tell you that too.

Need help now?
Call or Text 810-280-2222

Open 24/7 for messages & scheduling • Service-area business (no storefront address)

What we do best

Diagnostics & troubleshooting (find the real cause first)
PC and laptop repairs
Performance upgrades (SSD/RAM/GPU + optimization)
Custom builds for gaming, streaming, and professional work
In-home / small business support when on-site makes more sense

Service area

We serve all of Genesee County and nearby communities within ~20 miles of Flushing. You can view the full list on the Locations page.

Warranty

We offer a 90‑day labor warranty on repairs where applicable. If you have a question after a job is done, reach out — we stand behind our work.