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DNA INFORMATIKA – COMPUTER REPAIR AND IT SUPPORT – ZAGREB

When technology stops,

we get it running again

Reliable IT service for your computer

DnA Informatika provides professional repair, maintenance and upgrade services for computers, laptops and network systems.

Our goal is simple – to bring your device back to perfect condition so that everything runs fast, safely and without downtime.

Whether you need a hardware repair, a Windows installation, recovery of important data or advice on building a new computer, we are here to help.

With many years of experience in IT and technical support, we guarantee quality, transparency and fast service.

We install, maintain and repair computers for our clients.

Why throw it away when it can be repaired?

Guaranteed good service.

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100%

guaranteed service quality

Our services

All of our services – feel free to contact us for more information or a price.

Laptop and computer repair

Computer won't start, boots slowly or shuts down for no reason? Don't worry — we'll find the cause!
We quickly and reliably diagnose faults on all computer components and, if needed, replace them with new ones.

- Detailed diagnostics of hardware components (motherboard, RAM, drive, power supply, etc.)
- Performance and system stability testing
- Replacement of faulty or damaged parts
- Servicing and optimisation of the computer after the repair
- Advice on upgrades and on preventing future faults

Diagnostics with repair: free
Fault diagnostics: €15
Cleaning and thermal paste replacement: €40
Computer/laptop repair: from €25
Cleaning and optimisation: €20

Fault diagnostics

If you only need a fault diagnosis and a repair quote, without any work being done, we offer a complete diagnosis of the device and a detailed list of repair recommendations. The recommendations include the essential work needed to get the device running again, as well as optional work that would make it perform even better.

Fault diagnostics: €15
*Fault diagnostics are free if you approve the repair.

Drive replacement and data recovery from HDD or SSD

Your computer doesn't recognise the drive, or you can no longer access your files?
Don't panic — data can often be recovered!
We offer safe replacement of damaged drives and professional recovery of important data such as documents, photos and projects.

What we do:
- We diagnose the drive fault (HDD or SSD)
- We safely recover the available data
- We clone and transfer the data to a new drive
- We install the new drive and restore the system
- We advise on backups and data protection

No worries — if anything can be saved, we'll save it!

Diagnostics with repair: free
Drive diagnostics: €15
Data recovery from a faulty drive: from €50
Cloning and data transfer: from €35
Drive replacement + data transfer + installation: from €45

Component installation and replacement

Installation and replacement of components such as power supplies, processors, motherboards, RAM, SSDs and graphics cards.

RAM or SSD installation: from €20
Power supply replacement: from €20
Motherboard or processor replacement: from €40
Graphics card and driver installation: from €20

Thermal paste replacement and console cleaning (PS4 / PS5)

If your console is loud and shuts down suddenly, it's time to replace the thermal paste.

PS4 cleaning and new thermal paste: €40
PS5 liquid metal replacement + cleaning: €50
Liquid metal replacement + cleaning + thermal pads: €80

Windows and Office installation

We offer affordable Windows and Office licences as well as their installation.

Windows/Linux + Office installation + licences + setup and new drivers: €60
Windows + Linux dual-boot installation with backup: by agreement
Driver and basic software installation: €20
Windows installation and licence: €45
Office installation and licence: €30

BIOS and firmware updates

Regularly updating your BIOS and firmware ensures stable, secure and optimally fast operation of your computer or device. We carry out the upgrade procedure carefully to avoid problems and ensure maximum compatibility with new components and operating systems.

The service includes:
- Checking the BIOS and firmware version
- Safe updating with a backup
- Optimising system settings after the upgrade
- Stability and performance testing
- Advice on hardware compatibility.

BIOS update: from €20
Device firmware update: from €20

Antivirus installation

Keeping your computer secure is essential for protecting your data and working without interruption. Our antivirus installation and security service provides complete protection against viruses, malware and online threats.

We help you choose the best solution for your needs — whether it's a personal computer, a business network or an entire system. We make sure it is installed correctly, the licence is activated and the security definitions are updated regularly.

The service includes:
- Selection and installation of proven antivirus solutions
- Real-time protection setup
- Removal of existing viruses and malware
- Regular updates and security checks
- Tips for using the internet and email safely

Antivirus installation and setup: from €20
Virus/malware removal: from €20

Drive cloning and data transfer between HDD and SSD

Want to speed up your computer by switching to an SSD without losing your data and settings? Our cloning and data transfer service enables a complete migration of your system — quickly, safely and without having to reinstall the operating system.

The service includes:
- Cloning your existing system from HDD to SSD
- Transfer of all files, programs and settings
- Data integrity check after the transfer
- System optimisation for faster performance on the SSD
- Secure erasure of the old drive (if desired)

Keep all your data and enjoy a computer that is many times faster, thanks to an expertly performed transfer!

HDD → SSD cloning: from €35
Data transfer: from €25

Printer and scanner installation and setup

We quickly and reliably install all types of printers and scanners, whether via USB or network. We'll make sure the devices are set up correctly, connected and ready for hassle-free printing and scanning.

Printer/scanner installation: from €15
Network printer connection: from €25

Network setup and connection

Our service covers the complete setup and configuration of network systems tailored to your needs. We ensure optimal connectivity, security and reliability.

Home network setup: from €30
WiFi network configuration: from €25
Business network setup: by agreement
NAS (Synology) configuration: from €100

Network cable routing and organisation

We offer professional network cable routing and organisation, ensuring a tidy, safe and functional network.

Network cable routing: from €5
Cable organisation: from €15

Cable crimping and cable duct installation

Our service includes careful cable crimping, precise wall drilling and the installation of cable ducts.

UTP cable crimping: from €15
Cable duct installation: from €3

Network equipment configuration (routers, switches, printers)

We set up and configure network equipment for a stable and fast connection.

Whether it's routers, switches or network printers, we ensure correct connection, network protection and reliable, uninterrupted operation.

Router configuration: from €25
Switch configuration: from €30
Network printer connection: from €20

Computer purchase advice

We help you choose the computer that best suits your needs and budget.

No technical confusion — we advise on the processor, memory, drive and graphics card so you get the best value for money.

Advice and PC configuration planning: from €15
PC configuration design: from €20

System and computer configuration optimisation

We speed up your computer by removing unnecessary programs and optimising the system and its settings.

We fine-tune the configuration so that all components run faster, more stably and without hiccups.

Computer speed-up: from €15
Removal of unnecessary programs: from €15

Migration to Microsoft 365

Moving business email to Microsoft 365: from €60
Microsoft 365 account setup: from €25
Outlook configuration on computers and phones: from €10 per device
Migration from Gmail / IMAP email to Microsoft 365: from €100
Domain and DNS record setup: from €40

Microsoft 365 licences for business

Licence advice and selection (Business Basic / Standard / E3): €15
Licence activation and configuration: from €30
User and access management: from €20
Security policy and MFA protection setup: from €30

Microsoft 365 administration

Creating new user accounts: from €10
Password resets and user administration: from €10
Shared mailbox setup: from €20
Teams and OneDrive configuration: from €20

Maintenance and support for businesses

IT support for businesses: by agreement
Remote support: from €20
Monthly system maintenance: by agreement

Frequently asked questions

Common questions we have answers to

Ask your question

A: Check the power supply and connections. If it still won't turn on, bring the device in for diagnostics – in most cases the fault can be fixed quickly.

A: Yes, in most cases we can recover data even from damaged drives – it all depends on the extent of the damage.

A: Yes, by arrangement we can come to your location, especially for network installations or urgent faults.

A: Yes, every invoice we issue includes a barcode that lets you pay easily.

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