SS Computers08 Oct 2026

Graphics Card Repair in Chennai – GPU No Display, Artifacts, Overheating & Performance Problems

A graphics card, also called a GPU, is responsible for producing the image you see on a computer monitor. It is especially important for gaming systems, design workstations, video editing PCs, CAD applications and other graphics-intensive tasks.

When a graphics card develops a problem, the computer may show no display, screen artifacts, coloured lines, freezing, driver crashes, overheating, fan problems or poor performance.

SS Computers provides graphics card diagnosis and repair support in Sithalapakkam, Chennai, with service for nearby areas including Medavakkam, Perumbakkam, Ottiambakkam and Sholinganallur.

Before replacing an expensive GPU, the computer should be diagnosed properly because similar symptoms can also be caused by RAM, power supply, motherboard, software or monitor problems.

For complete desktop troubleshooting, visit our Computer Repair in Chennai service page.

Common Graphics Card Problems

Graphics card faults can appear in different ways depending on the hardware and the type of failure.

Common symptoms include:

No display from the graphics card
Screen artifacts or coloured blocks
Horizontal or vertical lines
Computer freezing during games
Driver crashes
Sudden black screen
GPU overheating
Graphics card fan not spinning
Loud fan noise
Low gaming performance
System restarting under load
Windows not detecting the GPU

If you notice these symptoms, the graphics card and related components should be tested before replacement.

1. Graphics Card No Display

One of the most common GPU problems is no display.

The computer may switch on normally, but the monitor remains black when connected to the graphics card.

Possible causes include:

Faulty GPU
Power connector problem
PSU issue
Motherboard PCIe slot problem
RAM fault
BIOS setting
Display cable or monitor issue

The first step is to check whether the monitor, cable, RAM and power supply are working correctly.

For no-display symptoms related to other hardware, read our Motherboard Repair in Chennai article.

2. Screen Artifacts and Coloured Lines

Graphics artifacts may appear as:

Coloured blocks
Random dots
Flickering patterns
Broken textures
Strange lines
Distorted images

Artifacts can be caused by GPU overheating, memory problems, unstable drivers, damaged VRAM or a failing graphics card.

If similar lines appear only on a laptop screen and not on an external display, the problem may be related to the laptop display instead.

See our Laptop Screen Repair in Chennai guide for screen-specific problems.

3. GPU Overheating

Graphics cards can produce a large amount of heat, especially during gaming, rendering or editing.

Overheating may be caused by:

Dust buildup
Blocked airflow
Weak or damaged fans
Dried thermal paste
Heavy continuous usage
Poor cabinet ventilation

A GPU that overheats may throttle performance, crash applications, display artifacts or shut down the computer.

For general heat-related computer problems, read Laptop Overheating & Automatic Shutdown.

4. Graphics Card Fan Not Working

If the GPU fan does not spin, the graphics card may overheat quickly.

Possible reasons include:

Fan motor failure
Damaged fan connector
Dust blockage
Fan controller problem
Zero-RPM fan mode on some modern cards

Some graphics cards keep their fans stopped at low temperatures, so fan behaviour should be checked under load before deciding that the fan is faulty.

If the fan is physically damaged or noisy, cleaning or replacement may be required.

5. Computer Crashes During Gaming

If the computer freezes, restarts or shows a black screen while gaming, the graphics card may be under stress.

Possible causes include:

GPU overheating
Driver problem
Insufficient power supply
Faulty GPU
Unstable RAM
Motherboard issue
Game or Windows software problem

It is important to test the system under controlled load before replacing the graphics card.

For Windows and driver-related faults, visit our Computer Software Support.

6. Poor GPU Performance

A graphics card may still work but perform much slower than expected.

Possible causes include:

Driver problems
Thermal throttling
Dust buildup
Low power delivery
Background software
Incorrect graphics settings
CPU bottleneck
Faulty hardware

Performance problems should be checked using temperatures, clock speeds, drivers and system usage before hardware replacement.

7. Windows Does Not Detect the Graphics Card

If the graphics card is missing from Device Manager or Windows does not load the correct driver, possible causes include:

Driver corruption
GPU power issue
Loose card connection
PCIe slot problem
BIOS setting
Graphics card fault

The graphics card should be reseated and tested along with the power cables and motherboard slot.

8. Power Supply Problems That Look Like GPU Failure

A graphics card may appear faulty when the actual problem is the power supply.

High-performance graphics cards require stable power through the PCIe slot and dedicated power connectors.

A weak or failing PSU can cause:

Black screen
Random restart
Crash under load
GPU not detected
Performance instability

The PSU should be tested before an expensive GPU is replaced.

For broader desktop hardware issues, see Computer Repair in Chennai.

9. Graphics Driver Problems

Driver problems can cause:

Screen flickering
Black screen after Windows starts
Driver timeout messages
Application crashes
Low performance
Incorrect resolution

A clean driver reinstall may solve software-related problems.

For software troubleshooting, visit our Computer Software Support.

Graphics Card Problem or Motherboard Problem?

GPU and motherboard faults can sometimes produce similar symptoms.

Useful checks may include:

Testing another monitor or cable
Testing integrated graphics if available
Checking RAM
Testing the GPU in another compatible system
Testing another graphics card
Checking PSU output
Checking motherboard PCIe slot
Inspecting BIOS settings

If the graphics card is not detected even after these checks, GPU or motherboard diagnosis may be required.

Read our Motherboard Repair in Chennai article for related board-level issues.

Can a Graphics Card Be Repaired?

Some graphics card faults may be repairable, while others may require replacement.

The correct decision depends on:

Type of fault
GPU model
Board condition
Availability of components
Repair cost
Replacement cost

Diagnosis should be completed before deciding whether repair or replacement is practical.

Gaming PC Graphics Card Support

Gaming PCs place heavy load on graphics cards.

Common gaming-related complaints include:

FPS drop
Screen tearing
Driver crashes
Black screen
System restart
GPU overheating
Fan noise

A full check may include GPU temperatures, PSU condition, drivers, RAM, storage and cooling.

Workstation GPU Problems

Design, CAD, rendering and video-editing systems can also suffer from graphics card issues.

Possible symptoms include:

Application crashes
Render failure
Display corruption
Slow performance
GPU memory errors

The graphics card, software compatibility and system configuration should all be checked.

Graphics Card Repair Service Areas in Chennai

SS Computers is based in Sithalapakkam, Chennai and supports customers from nearby areas including:

Customers can contact us with the graphics card model and symptoms before visiting.

Graphics Card Repair FAQ

Why does my graphics card show no display?

Possible causes include the GPU, PSU, motherboard slot, RAM, monitor cable, BIOS or driver problems. Diagnosis is required before replacement.

Why are coloured lines appearing on my screen?

Screen artifacts may be caused by GPU overheating, VRAM problems, driver issues or a failing graphics card.

Why does my PC restart while gaming?

Possible causes include GPU overheating, PSU problems, unstable RAM, graphics card faults or other hardware issues.

Can a graphics card fan be replaced?

In many cases, a damaged or noisy graphics card fan can be replaced if a compatible part is available.

Do you provide graphics card repair near Medavakkam?

SS Computers is based in Sithalapakkam, Chennai and supports nearby locations including Medavakkam, Perumbakkam, Ottiambakkam and Sholinganallur.

Related Computer Services

For related problems, visit:

Need Graphics Card Repair in Chennai?

If your computer has GPU no display, screen artifacts, overheating, crashing, fan problems or poor graphics performance, professional diagnosis can help identify whether the problem is caused by the graphics card, power supply, motherboard or software.

Book a Service Ticket or Contact SS Computers for graphics card diagnosis and repair support in Chennai.

Call: +91 98848 33551