Pick by problem type: troubleshooting goes to r/techsupport, custom PC builds to r/buildapc, and general computer chat to r/computers.
Where to ask
Best for: Troubleshooting software, hardware and errors.
Why it fits: Its public description: “Stumped on a tech problem? Ask the community and try to help others with their problems as well.”
Members in our directory: 3.5M
Rules to know before posting:
- No incomplete posts (for example an empty body or only a link).
- No password or account recovery help.
- No hardware/software recommendation requests.
- Keep help public — no moving to private messages; no unsupported (end-of-life) software.
Read r/techsupport’s current rules on Reddit
Best for: Planning, building or upgrading a custom PC.
Why it fits: Its public description: “Planning on building a computer but need some advice? This is the place to ask!”
Members in our directory: 8.5M
Rules to know before posting:
- No laptop or prebuilt PC questions.
- No requests for a complete parts list (one part is fine).
- One submission per 24 hours.
- No piracy or grey-market keys.
Read r/buildapc’s current rules on Reddit
Best for: General computer discussion.
Why it fits: Its public description: “This subreddit is for general discussion of computers.”
Rules to know before posting:
- No illegal content, including piracy or hacking.
- No begging for money and no personal sales.
Read r/computers’s current rules on Reddit
Before you post
- Write down the exact error message and what changed just before it started.
- List the operating system, device model and what you have already tried.
- Never share passwords or remote-access codes with strangers.
Related on SubMouse
Rule summaries are paraphrased from each community’s published rules (public archive copy retrieved 7 November 2026; original snapshot date unavailable). Current rules may differ — check the community’s rules before posting. A good fit does not guarantee a reply.