Fix a common household problem with safe first steps

Help me fix a common household problem.

What's wrong: [symptom]
Where: [room]
What I've tried: [list]
Home type: [flat/house, rent or own]
Any gas/electric/water concern: [details]

Ask me up to 3 short questions first if anything important is missing. Wait for my answers.

Then:
1. Safe first checks in order.
2. Tools I likely need.
3. A clear stop line — when to call a qualified person.
4. What to tell them when I call.
5. If I'm renting, when to contact the landlord instead of DIY.

No gas or electrical work beyond basic safe checks. Only use what I've told you, leave blanks for anything I haven't given, and don't invent facts, diagnoses or legal outcomes. UK English.

For official UK safety guidance relevant to this household problem, use web search and name the page you used. If it doesn't search on its own, open View all tools and choose Search.

Stay in this ChatGPT chat. Do not turn on apps or connectors, and do not use memory from another chat.