Why Choose Keith Thomas
• 20 years of experience as a Senior Apple Support Specialist at Apple Computer UK HQ.
• Former Apple Computer UK Mac Support Specialist and Apple Authorised Service Provider background.
• Established and Independent since 2010 for on‑site Apple Support Service – no call centres, no outsourcing, no hardware repairs. Over 25,000+ Apple problems resolved. Unique on-site Apple Support Service. backed up with Independent Apple Telephone Support Assistance.
• Trusted by home users, small businesses, and professionals across London and the South East UK.• Clear, honest, software‑only support. No Hardware Repairs. Expert Apple Consultancy Service.
On‑site Apple Mac Support in London and the South East UK
What this page covers
This guide explains the real reasons a Mac won’t turn on, the steps you can try yourself, and when it’s time to get professional on‑site help. It applies to:
• MacBook Air
• MacBook Pro
• iMac
• Mac mini
• Mac Studio
If your Mac shows no chime, no fan noise, no display, or a black screen, this page is for you.
The most common reasons a Mac won’t turn on
These are the issues that Keith Thomas identifies most often during on‑site visits:
• Power supply or charger failure
• Faulty USB‑C cable or power adapter
• Battery completely drained or unresponsive
• macOS update failure
• External device preventing startup
• Display backlight failure
• Corrupted startup volume
• Firmware lock or failed firmware update
• Peripherals causing a boot hang
• Damaged ports or liquid damage
Quick checks you can do yourself
These steps solve around 30% of “won’t turn on” cases.
Check 1 – Is the charger actually working?
Try a different socket, USB‑C port, or charger.
Check 2 – Remove all accessories
Unplug everything: USB drives, hubs, monitors, printers.
Check 3 – Try a long power press
Hold the power button for 10 seconds, then press again.
Check 4 – Reset the power system (M‑series Macs)
Unplug the charger – wait 30 seconds – plug in – hold power until “Loading startup options”.
If your Mac turns on but the screen stays black
Try:
• Shine a torch or an iPhone flash Light at the screen
• Connect an external monitor on MacBooks only
• Try a different display cable for MacBooks
• Disconnect all USB‑C devices
If the external monitor works on a MacBook, the Mac is on then the internal display is the issue.
If your Mac shows a symbol instead of starting
These symbols indicate specific problems:
• Flashing folder – Startup disk not found
• Spinning globe – Internet Recovery
• Prohibited symbol – macOS cannot load
• Padlock – Firmware password
• Blank screen after update – macOS update failure
All of these are recoverable with the right steps as long as the underlying issue is software‑related and not a hardware problem.
When DIY stops working
You should get on‑site help if:
• The Mac shows no response
• The screen stays black
• You hear a chime but nothing appears
• You see a flashing folder or prohibited symbol
• Internet Recovery fails
• macOS update failed
• You need your data preserved
These issues usually require:
• Startup volume repair
• macOS recovery
• Data‑safe repair
• Firmware checks
• Power system diagnostics
On‑Site Apple Mac Support – London & South East UK
If your Mac still won’t turn on, Keith Thomas provides an often same‑day on‑site support service across:
• Central London
• West, North, South and East London
• Surrey
• Berkshire
• Hampshire
• Wiltshire
Keith Thomas is a Mac Support Specialist in:
• macOS startup failures
• Data‑safe macOS recovery
• macOS reinstall and repair
• iCloud and Apple Account issues
• New Mac setup and migration
• Power and charging problems on MacBooks
Book on‑site help in London and the South East UK
If your Mac still won’t turn on, Keith Thomas can visit your home or office and get you working again.
Keith Thomas – Apple Mac Support Specialist
Established 2010 – Open 09:30–20:30, 7 Days
Contact Keith Thomas by Telephone: 07800 940756 or by Text to: 07800 940756, or simply complete an online website contact form 24/7