Latest Tutorial Videos

How to Repair laptop CPU Fan

How to Repair laptop CPU Fan

In this video, we have a Sony S series laptop that we did not find its fan on the market. In this short video, we will solve the problem so that if you didn’t find a device’s fan, you can fix the...

How to Solve Not Detecting VGA Port Problem in SAMSUNG Monitor

How to Solve Not Detecting VGA Port Problem in SAMSUNG Monitor

In this video, there is an SA300 Samsung monitor that has 2 DVI and VGA ports and by plugging in the VGA cable, it doesn’t have image (display). This problem is a very common one in Samsung...

basic electronics in laptop repairing

basic electronics in laptop repairing

It is a known fact that if someone wants to learn something -and anything- it would be best to learn it from the beginning and basics to intermediate and then at last to the advanced or...

How to Test Dual MOSFETs

How to Test Dual MOSFETs

There are some MOSFETs on some boards, similar to the picture below, which are so similar to single MOSFETs. In fact they are single High and Low MOSFETs that come in one package. How can you...

Repairing Laptop LED Backlight | Backlight Failure

Repairing Laptop LED Backlight | Backlight Failure

We have captured and published a couple of videos related to repairing LCD backlight but this one is a bit different ;). On the video below, the laptop has dark backlight and the LVDS flat cable...

Disabling Onboard RAM of V5-572G Laptop

Disabling Onboard RAM of V5-572G Laptop

Disabling onboard RAM of V5-572G laptop is tested and approved by Dr-Bios.com technical team and the solution is also shared on the website for the first time. Enjoy 🌸💚 ASPIRE V5-572G MODEL...

Macbook Pro A1286 DIS TO UMA

Macbook Pro A1286 DIS TO UMA

In this article we’re going to show you how to convert MacBook Pro a1286 2011 - 820-2915 Dis to UMA by applying some simple changes. All you need to do is to remove Graphic Chip and connect wire...

How To Measure Drawn Amperage Of Systems

How To Measure Drawn Amperage Of Systems

Sometimes a power supply or an adaptor has no power to boot up your system but you want to know how much current your system needs to switch ON?! In this kind of situation, you need to measure...

Solve "Manufacture Programming Mode Is In Unlock Mode" Error

Solve "Manufacture Programming Mode Is In Unlock Mode" Error

We usually face “Serial Number” or other similar errors after programming Bios in HP laptops. We have a video on the website in which we have fully shown you how to solve the error. But the...

How To Solve CPU Power Voltage Absence In Z570 Lenovo Laptop

How To Solve CPU Power Voltage Absence In Z570 Lenovo Laptop

In this video, we have a Z570 Lenovo Laptop which switches ON as soon as plugging in its adaptor. All the voltages are present except for CPU power voltage. We’ll check CPU power block and you can...

How To Repair Backlight Problem In Fujitsu AH54

How To Repair Backlight Problem In Fujitsu AH54

In this article we have a Fujitsu AH54 laptop that turns ON but with no backlight on display. As there this model didn’t have any schematic files, we had to use LED panel to recognizing jack pins...

How To Repair Monitor Part 15 T-CON Board

How To Repair Monitor Part 15 T-CON Board

This is the 15th video of repairing monitor in which we have analyzed the important and complicated board of screens, T-CON board. In this video you’ll be familiar with the concept of image...

Macbook Repairing Tutorial Part-2 Charging IC ISL6259

Macbook Repairing Tutorial Part-2 Charging IC ISL6259

This is the second part of MacBook repairing tutorial videos in which we’re going to continue talking about the concept of MacBook schematic reading. And in this video we have analyzed Charging...

The Importance Of The Table Of Voltage Rails In Laptop Repairing

The Importance Of The Table Of Voltage Rails In Laptop Repairing

What to do when a laptop turns ON but there is no dispaly? The table of voltage rails is available on the second or third page of most schematic files. This table is very valuable for repairmen...

How To Repair Monitor 14- Repairing LG W2286L

How To Repair Monitor 14- Repairing LG W2286L

The monitor we have on this video is LG W2286L with LED screen. The monitor is OFF and power LED blinks every 2 seconds and so much work is done on the mainboard. By watching this video you’ll see...

About Laptop Components Part 3 Power Mosfets 3

About Laptop Components Part 3 Power Mosfets 3

As a follow-up of the two previous parts on analyzing the obligations of Power MOSFETs in laptop power circuits, today you will learn about the obligations of High-side and Low-side MOSFETs. By...

MacBook Motherboard Repair Course Part 1

MacBook Motherboard Repair Course Part 1

How To Read Macbook Schematics- Part 1 Today we are pleased to have Hossein Asadollahi back on Dr-Bios.com's technical team to share his experience and knowledge as a MacBook Repairing tutor. As...

Not Booting Up Problem In Lenovo G500

Not Booting Up Problem In Lenovo G500

Today’s laptop is Lenovo G500 which hangs in the logo when it turns ON. It was taken to another repair shop before and its Bios has been programmed a couple of times! Because when laptops hang in...

About Laptop Components Part 2 Power Mosfets 2

About Laptop Components Part 2 Power Mosfets 2

In the previous video, I analyzed Power MOSFETs as one of the important components in laptops. In this part, I talk about the conduction mechanism of power MOSFETs and their obligations in laptop...

How To Repair USB Data Direction Disconnection In Asus K550V Laptop

How To Repair USB Data Direction Disconnection In Asus K550V Laptop

This video is about repairing a USB 2.0 port of laptops and as you might remember, we have fully analyzed the port previously in this article. And in this video, we have an Asus laptop with a...

Dr-Bios Experience In Laptop Repairing Part 4 About Testers Ohmmeter 2

Dr-Bios Experience In Laptop Repairing Part 4 About Testers Ohmmeter 2

A tester such as an ohmmeter is an important and valuable tool. That is why in this video, I show you how to test the accuracy and health of analog and digital multimeters in a way that you would...

About Laptop Components Part 1 Power Mosfets 1

About Laptop Components Part 1 Power Mosfets 1

Near 30 components are used on laptop motherboards nowadays. I want to check these components in order of their importance. Since more than 70% of laptop common problems are related to power...

How To Repair Surface Pro 4

How To Repair Surface Pro 4

In this video, we have a Surface Pro 4 which doesn’t work with its battery connected and by switching it ON with its adaptor plugged in, the display comes for a second and goes OFF right after and...

Dr-Bios Experience In Laptop Repairing Part 3 About Testers Ohmmeter 1

Dr-Bios Experience In Laptop Repairing Part 3 About Testers Ohmmeter 1

Many repairmen believe that analog multimeters are obsolete and they are not as efficient as digital ones. What do you think? Do you agree or disagree with this thinking? This video starts by...

How To Repair Monitor Part 13-Repairing Samsung S19C150

How To Repair Monitor Part 13-Repairing Samsung S19C150

In this video, you’ll see the repairing process of Samsung S19C150 monitor which is OFF and doesn’t switch ON. As you know, the initial step for troubleshooting an OFF monitor is to check its...

Dr-Bios Experience In Laptop Repairing Part 2 Injecting Voltage To Motherboard

Dr-Bios Experience In Laptop Repairing Part 2 Injecting Voltage To Motherboard

How to Inject Voltage to Motherboard to Find Short Circuit? Today, you will learn how to inject voltage to motherboards to find shorted components. In this video, you will see how I inject...

Monitor Repairing LG And X.Vision Mainboards- Part 12

Monitor Repairing LG And X.Vision Mainboards- Part 12

In this video you will see the repairing process of 2 monitors; the first one is LG_W1752S with LCD screen which has two problems (one problem in power board and the other problem in mainboard)...

Dr-Bios Experience In Laptop Repairing Part 1 Detecting IC Pins

Dr-Bios Experience In Laptop Repairing Part 1 Detecting IC Pins

We have good news for you! From now on we are going to record videos on repairing experience of Dr-Bios Technical Team. These videos would include repairing different hardware components such as...

How To Repair Monitor 11- Analysis Of Mainboard Signal Block

How To Repair Monitor 11- Analysis Of Mainboard Signal Block

In this video you’ll see the analysis of signal block of motherboard mainboard which is the most complex and most important block of monitor. So for better understanding, we’ve tried our best to...

How To Troubleshoot OFF Laptop In Simple Terms

How To Troubleshoot OFF Laptop In Simple Terms

How to Troubleshoot OFF Laptop in Simple Terms Laptop Name: Acer Travelmate 6595 Problem: OFF Primary Troubleshooting: No sign of water spillage, burning or manipulation. Volt-check done: No...

How To Change And Program I/O In Lenovo G50-70

How To Change And Program I/O In Lenovo G50-70

In this video, we have Lenovo G50-70 laptop with a problematic IO. You can practically see how to change IT8586E IO IC and you’ll get familiar with all the details of programming IO by SVOD3 and...

How To Repair OFF Laptop Lenovo G50-80

How To Repair OFF Laptop Lenovo G50-80

The laptop in this video is Lenovo G50-80 with NM-A361 motherboard that’s OFF and there is no short circuit, also no current draw and only B+ is present on the circuit. By watching the video, you...

MSI H61M-P21 B3 Short Circuit Problem

MSI H61M-P21 B3 Short Circuit Problem

MSI H61M-P21 B3 Short Circuit Problem In this video, I'll repair MSI H61M-P21 B3 which has a problem in power block. You'll learn about power supply functions as well as power sequence. At the...

How To Troubleshoot Sony-VGNSZ58GN OFF Problem

How To Troubleshoot Sony-VGNSZ58GN OFF Problem

The board that we have in this video is a complete turned OFF one which draws low current. And the voltage is only present on input jack of adaptor. This is a complementary video of the previous...

How To Repair An OFF Motherboard Asus-X555LD

How To Repair An OFF Motherboard Asus-X555LD

In this video, we have an Asus X555LD motherboard which is completely OFF even though everything looks fine and normal. There is also no sign of water spilling or burn. And we’ve checked the board...

How To Repair Short Circuit Of Asus H81M-C

How To Repair Short Circuit Of Asus H81M-C

How to Repair Short Circuit of Asus H81M-C Today, we are going to repair Asus H81M-C motherboard. The problem with this motherboard is that, when you press power button, the device (case) stays...

What Is The Proper Time To Program EC

What Is The Proper Time To Program EC

The laptop that’s repaired in this video is Lenovo-G50 with NM-A271 motherboard which turns ON automatically but there is no display. 1.35 RAM and ALW voltages are present but the rest are absent...

How To Repair Monitor Part 10

How To Repair Monitor Part 10

How to repair scrap mainboard of LG monitor In this video, you’re going to see how to repair mainboard of LG monitor with W1943S model which has been repaired a lot and a couple of components are...

How To Solve USB & Sound Problem In Gigabyte GA-VT890P Motherboard

How To Solve USB & Sound Problem In Gigabyte GA-VT890P Motherboard

How to Solve USB & Sound Problem in Gigabyte GA-VT890P Motherboard? We had promised you to start a new series of tutorials on desktop motherboard repairing, and so here is the first part of it...

Monitor Repairing Part 9

Monitor Repairing Part 9

In this video, you’re going to get more familiar with power block of mainboard of monitors. And in here we’ve analyzed 3 different mainboard brands and also talked about the important concepts...

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