Phone and laptop guides
Updated iPhone, MacBook and Windows guides: charging, boot loops, black screens, sleep battery drain, liquid, data and BIOS — NEXX GSM Bucharest.
Phone won’t charge: causes, quick tests and when the port must be replaced
Won’t charge — port, cable, cleaning; when to replace the connector.
iPhone won't charge: cable, Lightning/USB‑C port, battery or board?
iPhone won't charge — cable, Lightning/USB‑C, battery or board.
Samsung won't charge: what to check before you visit a repair shop
Samsung won't charge — cable, port, battery or board.
Laptop won’t charge: charger, DC jack, battery or board?
Laptop won’t charge — charger, DC jack, battery or board.
Tablet won't charge: cable, port, battery or charging board?
Tablet won't charge — cable, port, battery, board.
Phone won't turn on / won't boot: safe steps before a repair shop
Phone won't turn on — charge, force restart, black screen.
iPhone — restart, Recovery, DFU and Diagnostics
Force restart, Recovery, DFU and Diagnostics — new and older models.
iPhone storage full and stuck on the Apple logo: protect your data first
Full storage, Apple logo or boot loop after an iOS update — data-safe first steps.
Phone dropped in water — what to do (and what NOT)
Phone dropped in water: first 10 minutes — no rice, no wet charging.
Laptop after liquid — what to do (and what not)
Don’t keep a wet laptop closed — moisture reaches the display. Immediate steps.
Cracked phone screen: what you can do, how long repair takes and when data is at risk
Cracked screen — protection, data, repair timing.
Phone battery drains fast: signs it needs replacing
Fast battery drain — wear signs, tests, replacement.
Face ID not working — after a drop, new screen or liquid
Face ID — TrueDepth, screen, diagnostics.
iPhone 12 repairs: when a screen, battery or port is worth fixing
iPhone 12 through 12 Pro Max: identify the phone and avoid guesswork repairs.
iPhone 13 repairs: mini, Pro and Pro Max need different decisions
iPhone 13 family: assess runtime, display and cameras for the exact model.
iPhone 14 repairs: Plus and Pro need different checks
iPhone 14: distinguish Plus from Pro and assess impact before selecting a part.
iPhone 15 repairs: USB-C, screen, battery and cameras
iPhone 15 family: diagnose USB-C and inspect before replacing a part.
iPhone 16 and 16e repairs: identify before diagnosing
iPhone 16 and 16e: five models, different layouts and diagnosis without assumptions.
iPhone 17, 17e and iPhone Air repairs: distinct models
iPhone 17, 17e and iPhone Air: correct names, different years and model-specific assessment.
iPhone 18 Pro and Pro Max repairs: identify before quoting
iPhone 18 Pro and Pro Max: inspect before selecting a part.
Phone has no sound — speaker, microphone or just settings?
No sound — speaker, mic, grill.
MacBook — key combinations, SMC and NVRAM
SMC on Intel, Apple Silicon startup, NVRAM and other useful combos.
MacBook battery not charging: programming, repair or replacement?
Battery and BMS diagnostics, controller programming, and clear replacement criteria.
Swollen MacBook battery: stop using it and replace it
Warning signs, immediate steps, and why a swollen pack must be replaced.
Windows — boot keys by brand
F2, Del, Esc, F10, F12 — Boot Menu and BIOS by brand.
Laptop won't turn on — what to check before you bring it in
Laptop won't start — power, boot, board.
Laptop overheating or noisy fan — what to check before a shop visit
Laptop overheating — dust, paste, fan.
Windows laptop drains battery while sleeping or closed: what keeps it awake?
Battery empty or laptop hot after sleeping with the lid closed — diagnose Modern Standby first.
MacBook screen stays black after sleep: macOS Tahoe or hardware?
Black screen after sleep while the keyboard still reacts — software vs display hardware.
MacBook Air M1, M2, M3, M4 and M5 repair: a generation guide
A practical guide to 13- and 15-inch Air M1–M5 models, using introduction year rather than purchase year.
2020 Intel MacBook repair: identification, safe checks and diagnosis
Identify the Intel Air and both 2020 Intel Pro versions before choosing a repair.
2026 MacBook Neo repair: careful identification and diagnosis
A new Apple-confirmed model whose diagnosis and parts must be checked individually.
13-inch M1 and M2 MacBook Pro repair: diagnose it without confusing Intel
Two Apple-silicon generations in a familiar case, with model-specific parts and diagnosis.
14/16-inch MacBook Pro repair: M1 Pro through M5 Pro and Max
Confirm size, introduction year and chip before selecting a part or repair path.
Dell BIOS password recovery: what actually works
Identify a Dell BIOS, drive, or Windows password — and what owners can do next.
Find your Dell BIOS guide by model
Browse Dell models and observed BIOS suffixes, then open the matching guide.
Dell Admin or System password: which one is the screen asking for?
System, Admin/Setup and HDD/SSD passwords protect different parts of a Dell computer.
Dell Security Manager asks for a password: what to do
Dell Security Manager, Enter System Password or a password-authentication message: start with the screen.
Dell laptop password reset: BIOS password or Windows sign-in?
A screen-by-screen check for Dell System, Admin, drive, Windows and BitLocker prompts.
Dell System Number vs Service Tag: what is the difference?
The sticker Service Tag and the System Number on a BIOS password screen are related identifiers, but they are not interchangeable instructions.
Dell BIOS Recovery vs BIOS password reset: they solve different problems
Corrupted firmware and a forgotten BIOS password are different problems with different recovery paths.
Is there a default Dell BIOS master password?
There is no official universal Dell BIOS password that safely unlocks every laptop. Recovery depends on the device, password type, configuration, and device history.
How to enter BIOS on a laptop: keys by brand
Enter BIOS — brand keys and password screens.
Dell BIOS passwords after employee offboarding or fleet retirement
An employee left, but the BIOS password stayed. Check what is locked, prepare Dell laptops for reuse or resale, and find out when remote support fits.
Dell BIOS password suffixes: 8FC8, CF1B, 3FE2, 1B58 and 9ABE
Choose the guide matching the four characters after the dash on your Dell password screen. The table links each suffix to Dell system families and approximate model years.
Dell 8FC8 BIOS password: models and recovery
8FC8 has been observed in Latitude, Precision, Dell G, Inspiron, Dell Pro, OptiPlex, Dell 15, Vostro. The model generations in this table span 2019–2025; support still depends on the complete screen code and password type.
Dell CF1B BIOS password: models and recovery
CF1B has been observed in Latitude, OptiPlex, Dell Pro, Precision, XPS, Vostro. The model generations in this table span 2019–2025; support still depends on the complete screen code and password type.
Dell 3FE2 BIOS password: models and recovery
3FE2 has been observed in Latitude, Precision, Inspiron, Alienware, OptiPlex, XPS. The model generations in this table span 2021–2023; support still depends on the complete screen code and password type.
Dell 1B58 BIOS password: models and recovery
1B58 has been observed in Dell Pro. The model generations in this table span 2025–2026; support still depends on the complete screen code and password type.
Dell 9ABE BIOS password: models and recovery
9ABE has been observed in Latitude, Precision, XPS, Dell G. The model generations in this table span 2023–2024; support still depends on the complete screen code and password type.
Dell 0001 BIOS suffix: what to do next
What the Dell 0001 suffix confirms, what Dell says about Master Password Lockout, and where to seek authorized help.
Broken phone data recovery: what can still be saved
Broken phone / cracked display data recovery — don’t format first.
How to choose part quality: Service Pack, OEM, high-class or budget copy
Service Pack · OEM · premium · budget — how to choose.
How much does phone repair cost? Indicative prices by repair type
Phone repair costs in Bucharest: battery, display, charging port, back glass, board. Indicative price ranges, what drives cost, warranty and diagnostics.