Black Screen Notebook | Bahía Blanca

Advanced electronic diagnostics at CM Informática

When a notebook turns on but does not display an image, remains with a black screen or does not show video, the problem is usually in the video system or in the communication between the screen and the motherboard.

In our laboratory at Misiones 730, we perform professional electronic diagnostics to identify the real cause and restore the image of the equipment.

Most common causes of black screen

Backlight without illumination

The screen remains dark even though the device is turned on.

damaged video flex cable

Cuts or wear from opening and closing the lid.

No signal

The panel is on, but it is not receiving an image from the motherboard.

GPU the video circuit

The device turns on, but does not display an image.

BIOS corrupted

It starts up without a logo, without POST, and without video.

Motherboard with voltage faults

Short circuits, damaged MOSFETs, or panel power supply failures.

What do we do in the laboratory?

Technical diagnosis with professional instruments:

Video and power line measurement, backlight testing, video flex cable replacement, BIOS reprogramming, motherboard and video circuit repair, GPU testing, compatible screen replacement

The goal is to determine if the fault corresponds to the screen, flex cable, backlight, GPU, BIOS, or motherboard.

What is the repair process like?

Technical diagnosis of the equipment.

Estimate based on the detected fault. Deposit to order the replacement part when applicable. Receipt of the replacement part. Repair in the laboratory. Final image and stability tests. Delivery to the customer.

How long does the repair take?

The timing depends exclusively on the availability of the spare part.

In most cases, suppliers deliver within 5 business days, which is the usual timeframe for screens, flex cables, chargers, batteries, and common spare parts.

When the spare part is not in stock in Argentina and must be imported, the timeframe can be extended between 30 and 60 days, depending on the origin and customs processing times.

Once the replacement part is received, the repair is carried out in the laboratory within approximately 24 hours, depending on the workload of the day.

How much does the repair cost?

The cost depends on the necessary replacement part and the service to be performed, which is determined with a prior diagnosis.

Once the fault has been identified, the full budget is provided before proceeding with the repair.

What brands do we serve?

Lenovo, HP, Dell, Asus, Acer, Samsung, Banghó, CX, EXO and all other brands on the market.

Laboratory management

We are located at Misiones 730, Bahía Blanca. More than 30 years of experience in professional notebook repair.