One long, two short BIOS signals - what does this combination mean?

Often there are such unpleasant situations in working with personal computers, when users are faced with various problems and errors. And if the problem is associated only with a particular software or application, then it is often possible to fix it quickly. In contrast to the error associated directly with the system itself, the only notification about which is transmitted by the BIOS through audio signals. Such problems often have the most critical impact on the overall performance of the computer. And to one of the most common errors, which the BIOS notifies one long and two short consecutive signals, should be prepared literally every owner of a home PC.

What is the role of the BIOS in detecting and notifying the user about system errors?

Any user to understand the essence of the problem and the principle of its further solution must understand the basics of the basic system components of his computer.

When the computer starts up, the BIOS - the basic input / output system - performs a short analysis of all the components that are connected to the PC. This test is called POST (English Power-on-Self-Test), and it usually lasts only a few seconds.

And only after its carrying out the BIOS receives all information about all components of the computer. If the entire system is fully operational, then the user will hear one soothing ear, so short. It is fed through the speaker - the simplest device of sound reproduction, which is equipped with any motherboard.

But if at least one problem with any of the components connected to the PC is detected during the POST self-test, the BIOS will alarm the user with a whole set of different signals, the variations and combinations of which have a completely different meaning.

Also, information about the results of the POST test can be displayed on the screen of the monitor connected to the computer. This visual alert instantly gives the user specific information about the problem, which eliminates the need for decoding audio signals. However, such an output of information may not always be available to the PC owner for a number of different technical reasons, because of what the speaker remains a more reliable and stable source of information from the BIOS.

One long, two short BIOS signals - more on decoding

The monitor in this case does not display absolutely any information, which is directly related to the type of the problem itself. This is a problem with the elements of the computer, in the event of which the user has to recognize the essence of the malfunction only by the speaker's sound notification. Denote having a problem with one long, two short BIOS signals.

Virtually in all BIOS versions from a variety of different manufacturers (such brands as AMI, IBM, Compaq, Quadtel, etc.), such a combination of sounds usually indicates a malfunction of the computer's video system. Or, speaking in general terms, such a signal notifies about the failure of the video card.

Significance of the same signal in different versions of IBM, AMI, AST and Compaq

However, some separate features of the value of the same signal in different versions of the BIOS deserve special attention. Not so important even the motherboard manufacturer, when at startup we get one long, two short BIOS signals. Asus, Gigabyte, MSI or ASRock - the company that manufactured the device does not matter. We are only interested in the version of the BIOS itself.

For example, in BIOS from IBM and AMI, one long and two short signals are generated only if a Mono / CGA video card is built into the user's computer. Nowadays, such iron practically disappeared without a trace from the market, giving way to more modern developments. So, your chances of encountering such a signal on this type of BIOS almost zero.

In the AST-version, the signal notifies only about the specific problem of the video card - about the problems with the personnel scanning of the signal. Owners of this type of BIOS, pay special attention - you will be warned about other errors of the video card by completely different sound combinations.

A slightly different meaning of this error gets in the versions of Compaq and Quadtel. One long, two short BIOS signals in this case indicate problems with the initialization of the video card. The system is corny can not correctly determine it. Therefore, it's far from the fact that users, whose computer is equipped with one of these types of BIOS, really faced with the failure of the video card itself.

The situation is similar with the Award BIOS, however, this signal can occur if the monitor is not connected to the computer.

One long, two short BIOS signals: what to do and how to solve the problem

The ideal beginning with such a problem will be, first, the exact definition of the BIOS version on the user's computer. The monitor will not display an image, so you should read the information first of all in the documentation that comes with the motherboard. If you have an alternative video card (spare, outdated, borrowed for a while from a friend, etc. - the main thing is to be working), then the task is greatly simplified. It will be enough to press the Pause / Break key during the POST self-test procedure. In the given information list, find one of the above-mentioned names - this will be the name of the BIOS manufacturer on your motherboard.

The winners of the Award BIOS should first check the connection of the monitor to the corresponding connector of the video card - the simplest procedure that solves most of such problems. In any other cases (including with Compaq and Quadtel manufacturers), you should disconnect the video card from the PCI-Express connector as accurately as possible, and then reconnect it again - problems with initializing the video card at home are solved in this way.

None of the above does not help? Do you still hear one long, two short BIOS signals? Is the laptop or computer still not functioning properly?

Before hurry to the nearest service center, find out one important detail. Find a working video card for a short time to replace the one with which the BIOS notifies about the problem. If the problematic part is replaced with an alternative one, and the BIOS gives one short signal when turning on - the problem was clearly in the video card itself. And if even after such a replacement you still hear the same annoying signal, then the problem lies deep in the computer's skeleton - on the motherboard. For example, an inefficient connector for PCI-Express video cards is, although not common, but still a problem at times.

So you will determine exactly which component the problem is in and you will know what exactly to carry on the diagnostics to the service center.

If the laptop ordered long live one long and two short BIOS signals ...

And even on laptops, one unfortunate one long, two short BIOS signals can sound one day. Samsung, Asus, Lenovo, etc. - the brand here does not play a special role, because of such a malfunction is not insured by any computer. Therefore, laptop owners should also take into account a couple of nuances in the event of such a problem. Fortunately, in most such cases everything is solved by the same methods that apply to desktop PCs.

However, not always the problem lies in the video card of the laptop. And if this is so, then firstly replace the memory slots with third-party working counterparts. The problem can be in this element of the system.

Afterword

As you can see very well, such a problem with the computer hardware can easily be resolved at home. However, measures like "reconnect video card / monitor cable" are completely useless when it comes to a really broken video card or motherboard. In such cases, immediately it is worth turning to a specialist in the field of repair of computer components.