HP won't boot. Diagnostics and repair at the service center. HP G62 laptop won't boot

This document provides a list of symptoms you may see when your computer won't start, and provides an overview of the entire troubleshooting process, links to other documents related to step by step instructions on restoration normal operation computer. If your computer won't start or boot operating system Windows, follow the instructions in this document to resolve this issue.

Reconnect the power adapter AC(do not connect the battery), press the Power button, check if the indicator lights next to Caps keys Lock and Num Lock, and listen for noise from the fan or other moving components.

If after complete hard reset The computer starts normally and the problem has been resolved. Otherwise, select the symptom that best describes your problem from the list below and follow the troubleshooting steps.

If appears blue screen and the computer stops responding, do one or more of the following: next steps to troubleshoot problems starting or loading the operating system.

If the laptop has power, you can open the EFI or BIOS settings window to run memory diagnostic tests and hard drive. For information, read one of following documents with a description of diagnostic tests for memory and hard drive.

If Windows does not boot, press f8 immediately after turning on the power. IN Screen additional options Windows boot select one or more the following options. Select one option at a time and press Enter to reboot the system.

Check the box Disable automatic restart on system failure to view error messages.

After selecting the item Fix computer errors you can run the action to run diagnostic tests.

Select an item Loading the latest successful configuration(additionally) to return the settings to one of the previous operating states of the computer.

Select action Start the system in safe mode, then - Removing recently installed programs.

After starting your computer in safe mode, click the Start button, select Control Panel, then - Remove a program. After your computer restarts, go to the software developer's website for technical support information.

When the Windows Advanced Boot Options window opens, select Safe Mode with loading network drivers and if you have an Internet connection, complete the following tasks.

www.update.microsoft.com and run Windows Update.

Open a web browser window (for this task it is preferable to use Internet Explorer). Go to HP Software and Driver Downloads website. Specify the country and language, check the box Download drivers and software , enter your model name or product code and install the latest BIOS version.

This document provides a list of symptoms you may notice when your computer won't start, provides an overview of the entire troubleshooting process, and links to other documents with step-by-step instructions for restoring your computer to normal operation. If the computer does not start or the operating system does not load Windows system, then follow the instructions in this document to resolve this issue.

Reconnect the AC adapter (do not connect the battery), press the Power button, check to see if the lights next to the keys are lit Caps Lock and Num Lock, and also listen for noise from the fan or other moving components.

If your computer starts normally after a hard reset, the problem has been resolved. Otherwise, select the symptom that best describes your problem from the list below and follow the troubleshooting steps.

If a blue screen appears and your computer becomes unresponsive, try one or more of the following steps to resolve the issue with starting or loading your operating system.

If the laptop has power, you can open the EFI or BIOS settings window to run memory and hard drive diagnostic tests. For information, read one of the following documents describing memory and hard drive diagnostic tests.

If Windows does not boot, press f8 immediately after turning on the power. IN Windows Advanced Boot Options Screen Select one or more of the following options. Select one option at a time and press Enter to reboot the system.

Check the box Disable automatic restart on system failure to view error messages.

After selecting the item Fix computer errors you can run the action to run diagnostic tests.

Select an item Load Last Known Good Configuration (optional) to return the settings to one of the previous operating states of the computer.

Select action Start the system in safe mode, then - Removing recently installed programs.

When the Windows Advanced Boot Options window opens, select Safe mode with loading network drivers and if you have an Internet connection, complete the following tasks.

www.update.microsoft.com and run Windows Update.

Open a web browser window (Internet Explorer is preferred for this task). Go to HP Software and Driver Downloads website. Specify the country and language, check the box Download drivers and software, enter your model name or product code and install the latest BIOS version.

HP laptop won't turn on

Brought to the laptopHP Pavilion 15 - n055sr diagnosed as "dead" or " won't turn on"And indeed, when connecting it to the network (with or without a battery), the laptop did not react at all to the power button. The solution turned out to be quite unexpected (and is suitable not only for HP laptops, but also for other brands), but first things first. ..

The client claimed that he handled the laptop carefully, did not spill anything on it, did not hit it, and in general it turned off normally after work and did not turn on again...

As usual, we carried out standard diagnostics And visual inspection motherboard for flooding and mechanical damage. The cooling system also turned out to be normal and was quite clean. On laptop overheating It clearly doesn’t look like it, we thought, and decided that perhaps the reason for everything was a failure of the BIOS microprogram (firmware).

Resetting BIOS firmware on a laptop HP Pavilion G6 15 - n055sr can only be done by disassembling it completely, unlike, for example, where everything is much simpler (you can read about how the BIOS is reset on the company’s laptops Packard Bell). After disassembling the laptop, remove it from the motherboard BIOS battery for 10-15 minutes, and without wasting time, let’s go drink coffee...)

After 10-15 minutes, we insert the battery back, connect the cable from the laptop charging connector to the board and we see this picture, the charging indicator, which was not initially on, came on:

Next, press the power button and, lo and behold! , the laptop turned on, although it was disassembled, but it worked fine. The job is done, we thought, and assembled the laptop completely... connected charger and laptop HP Pavilion 15 won't turn on again!!! AND power indicator Same doesn't light up! In general, everything is as before...

The solution came somehow by itself... we started disassembling the laptop, removed the keyboard, disconnected the remaining cables and “for good luck” connected the power, and the power indicator again lit up with a magical light.

Then everything turned out to be very simple, using the method serial connection all loops and devices (Wi-Fi adapter, memory, hard drive) it was discovered that the laptop does not turn on with the keyboard connected!!!

To determine what exactly the reason is: in the keyboard controller on the motherboard or in the keyboard itself, the easiest way is to connect a known-good keyboard of exactly the same model (look at the part number on back side keyboard, our number on the keyboard was like this:719853-251 ) and check the operation of the laptop, but not everyone has a spare laptop keyboard on hand! And we didn’t have it. Therefore we use another universal method keyboard checks.

1. Disconnect the keyboard from the laptop:

2. Take the multimeter and switch it to resistance measurement mode in the megaohm (MOhm) range:

3. Then, one by one, check the resistance between the contacts of the keyboard cable. First between the first and second contacts, then between the first and third, between 1m and 4m, 1m and 5m and so on until last contact. Then we put one multimeter probe on the second contact of the cable, and the second probe on the third contact of the cable and also check the short circuit between 2m and all other contacts of the cable. We carry out this procedure with all contacts.

As a result, we got a resistance of about 30kOhm between 3 and 4, 3 and 5, 3 and 6 (and in several other cases), which clearly indicates keyboard malfunction. It was either flooded or has some internal hidden defects. Given way to check the health of the keyboard applicable to keyboards from almost any laptop manufacturer (LENOVO, ACER, SAMSUNG, TOSHIBA, etc.)

After keyboard replacement laptop HP Pavilion G6 15 - n055sr started to turn on and work normally. After several hours of testing in different modes We verified that the laptop was in working order with the new keyboard.

It is worth noting that diagnostics and testing to identify a laptop malfunction in the case when the laptop does not turn on / does not start should begin with the sequential disconnection of all devices and modules connected to it. If anyone found this article useful, please write your comments below. Your opinion is very important to us.

Good luck everyone!

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Troubleshooting options, cost of work

Unlike other service centers, we do not have hidden items in the price list; all work is discussed exclusively in advance and individually, depending on the laptop model! And we never charge money for diagnostics and delivery in Moscow!

Availability and cost of components in our warehouse, you can look at sections of our online store . This information you can also check by contact number phone.

Receive a free consultation and 10% discount in case of repair

What to do if the HP G62 laptop does not turn on

To find out why the HP G62 laptop does not turn on, you need to inspect the internal components of the device. First of all, the battery, then the cable, connectors and, of course, the power supply. If there are no obvious signs of malfunction, it is necessary to obtain data on the voltage at the output of the external unit. The voltmeter showed zero - the device is inoperative and the power supply will have to be repaired. You can also use a spare battery for testing (if available). Otherwise, it is better to turn to professionals, who are the employees of our

To make sure that the power supply system is working, we first carry out an express check:

The wizard disconnects the power supply connectors from the MP, video card, hard drive, cooler.
Then he closes (with tweezers/clip) the wires on the widest connector (green or black wire).
If the power button is lit, the fans inside the power supply have not started - the power supply is faulty, which means it will be subject to a more thorough check and repair. The cost of services is indicated in the section

The reason that the HP G62 laptop does not turn on with the button may be:

Malfunction of the motherboard (main symptom: the laptop does not turn on, the indicators are on);
Overheating of BGA chips, connectors;
Failure of the battery or power circuit;
Burnt out processor;
Errors in reading RAM;
Non-working matrix or its connection cable

Whichever option turns out to be correct, our specialists will solve the problem and extend the life of your laptop!

Common HP laptop models that are repaired in our service center with this problem

~ repair cost 1500 rub.
~ repair cost 3200 rub.
~ repair cost 1400 rub.
~ repair cost 1000 rub.

When and why should you come to an HP service center?

Repairing the motherboard yourself may lead to further big problems. If handled carelessly, it is easy to damage the processor (for example, if you touch its legs with your fingers). The MP problem may be hidden in a “collapsed” connector (socket) of the power connector. This is difficult for the untrained eye to understand, but not for our employees.

In order to change the BGA or resolder the power connectors you need to use professional IR soldering station (we have all the necessary equipment!)

A “breakdown” of the power circuits can be caused by voltage surges, the use of low-quality or universal power supplies without current protection, a malfunction of the battery, or mechanical impacts (shocks, falls).

To eliminate such damage, our technician will restore all connections, thereby ensuring the functionality of the power circuit elements.

The main “symptom” of a problem with the HP processor is that the laptop does not turn on (precursors: heating, periodic rebooting). You can check whether this is true by removing the cooling system and inspecting the crystal and the sticker underneath it. If it has darkened, the conclusion is clear!

Don't mess with your PC hardware yourself, trust the experience of the people at our center!

To understand that the problem is in the display, you will have to connect the laptop to an external screen through one of DVI connectors, VGA or HDMI (no difference). If a picture appears on the monitor upon startup, but the laptop screen does not turn on, then it is the laptop that has failed. Isn't there such a possibility? Come, we will look, check, fix.

When is memory replacement required on a laptop and how is it diagnosed?

Lead RAM When it becomes unusable, it’s very simple (which most often becomes the cause of the problem called “the laptop won’t turn on”) - fill the keyboard with some liquid. Even if this didn’t happen, it’s still worth checking the OP.

This usually happens as follows: the technician, disconnecting from the network and removing the battery, opens the memory compartment (after removing the bolt and “pulling out” special latches. The removed strip is inspected for oxides or blackened tracks. If the result is positive, it is replaced with a similar model, parameters which is no different from those that my native had.

In any case, you can always request a FREE consultation by phone. Visit page

This document provides a list of symptoms you may notice when your computer won't start, provides an overview of the entire troubleshooting process, and links to other documents with step-by-step instructions for restoring your computer to normal operation. If your computer does not start or the Windows operating system does not load, follow the instructions in this document to resolve the issue.

Reconnect the AC adapter (do not connect the battery), press the Power button, check that the lights next to the Caps Lock and Num Lock keys are lit, and listen for noise from the fan or other moving components.

If a blue screen appears and your computer becomes unresponsive, try one or more of the following steps to resolve the issue with starting or loading your operating system.

Check the box Disable automatic restart on system failure to view error messages.

After selecting the item Fix computer errors you can run the action to run diagnostic tests.

Select an item Load Last Known Good Configuration (optional) to return the settings to one of the previous operating states of the computer.

Select action Start the system in safe mode, then - Removing recently installed programs.

When the Windows Advanced Boot Options window opens, select Safe mode with loading network drivers and if you have an Internet connection, complete the following tasks.