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Device Diagnostic Tools — Find Out What's Wrong With Your Device

Use these free diagnostic tools before booking a repair — identify the most likely fault type, understand the severity, and know what to expect when you contact us.

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Quick Answer

Your IT & Tech Mates services Device Diagnostics across all service types — computer repairs, laptop repairs, phone repairs, virus removal, Wi-Fi setup, and more. We come to you. Pricing from $79, same-day service subject to availability, no fix no fee.

Free device diagnostics tools — Your IT & Tech Mates
No Fix No FeeYou only pay if we fix it
Same-Day ServiceSubject to availability
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Mon–Sat 9am–7pmEpping base, Melbourne North
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About These Tools

What are device diagnostic tools? These free tools help you identify the fault type on your laptop, desktop, phone, or tablet before calling for repairs. Most computer faults — slowness, overheating, screen damage, charging problems — can be narrowed down significantly by answering a few targeted questions.

What to do after running a tool: If the result suggests a serious fault (drive failure, GPU issue, severe water damage), act quickly — delays often increase repair cost or risk data loss. For minor faults, our guides walk through DIY options first.

7 diagnostic tools

Tools in This Category

🔍 Diagnose
Slow Computer Diagnosis
Find out why your PC is running slow
🌡️ Heat
Laptop Overheating Check
Is your laptop running too hot?
🖥️ Display
Screen vs GPU Check
Screen fault or graphics card?
⚡ Charging
Charging Port Check
Port, cable, or battery issue?
💧 Urgent
Water Damage First Response
What to do in the first hour
📏 Screen
Screen Damage Check
How severe is your cracked screen?
✅ Same-Day
Same-Day Repair Check
Can your device be fixed today?
Ready to Book?

Get Professional Help After Using a Tool

Our tools help you understand the problem — we fix it. Same-day service across Melbourne's north, no fix no fee.

🖥️ Service
Computer Repairs Melbourne
Same-day repairs from $79 across Melbourne's north
📍 Local
Computer Repairs Epping
Our home base — fastest response times
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View All 38+ Free Tools
All diagnostic, security, and decision tools
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Book a Service After Using the Tools

Computer Repairs Melbourne
Laptop Repairs Melbourne
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About These Tools

Who These Tools Are For & How to Use Them

Who should use these tools?

These tools are for anyone whose device is behaving unexpectedly — shutting off, running slowly, displaying screen problems, or showing signs of charging or overheating issues. Use them before calling a technician to understand what you're dealing with.

🧭 How to choose the right tool

Start with the symptom closest to your problem: Slow → Slow Computer Diagnosis. Overheating → Laptop Overheating Check. Screen issues → Screen vs GPU Check. Not charging → Charging Port Check. After getting wet → Water Damage First Response.

⚠️ When to stop using tools and call a technician

If your tool result shows hardware failure, physical damage, or a fault that's worsening — book a professional assessment. Delays on cooling issues, charging faults, or water damage significantly increase repair cost and data loss risk.

Common Questions

Frequently Asked Questions About These Tools

Not necessarily — minor results include DIY steps you can try first. But if those steps don't resolve the problem within a day, escalate. Many 'minor' issues are early warning signs of hardware failure.
Answer every question as accurately as possible. If you're unsure about a question, choose the closest option. If results still don't match, call us — phone triage is free.
Yes — all tools cover both Windows and Mac hardware unless specifically noted. MacBook-specific nuances (e.g. T2 chip, APFS, Apple Silicon) are referenced in the relevant result explanations.
If your device is shutting off unexpectedly — use the Overheating Check first, then the Slow Computer Diagnosis. Thermal shutdown is often the root cause of multiple other apparent symptoms.
Depends on the fault. Overheating devices risk permanent CPU/GPU damage. Failing drives risk data loss. Devices with electrical faults risk component damage. When in doubt, power off and call us.
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Real-World Experience

Most Common Problems We See With These Tools

These patterns come from real repair visits across Melbourne's northern suburbs — the same issues these tools are designed to help you identify.

Computer slower than it used to be

Usually HDD failure, RAM shortage, or accumulated startup programs. We see this in most suburbs weekly.

Laptop shutting off unexpectedly

Thermal throttling from dust buildup is the most common cause. Often resolved with a professional clean.

Screen flickering or showing lines

Can be screen cable, GPU, or driver fault — the Screen vs GPU tool distinguishes these.

Phone or laptop won't charge

Lint in port, failed cable, or damaged port. The Charging Port Check narrows this down accurately.

Device won't turn on after liquid exposure

Power off immediately. Water damage is time-critical — use the Water Damage Response tool at once.

Expert Context

How We Use These Tools in Real Repairs

When we arrive for a diagnostic visit, we run through the same questions these tools ask — but faster, with hands-on hardware access. We check CPU and GPU temperatures under load, run storage health reports, examine physical condition, and test all ports and peripherals. These tools give you the context to have a useful conversation with us before we arrive — and help us arrive prepared.

Need Help Beyond the Tools?

Call or WhatsApp for a direct assessment. We come to you across Melbourne's northern suburbs.

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Your IT & Tech Mates · Melbourne's North · Mon–Sat 9am–7pm
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