有时，打开台式机或笔记本电脑(desktop or laptop)后可能会出现黑屏或黑屏问题。您可能还会听到一些奇怪的哔哔声。这是许多Windows用户面临的常见问题。您可以尝试重新启动系统来解决此问题。但如果问题仍然存在，则可能是硬件故障或故障(faulty or malfunctioning hardware)。当你打开你的电脑时，灯和 CPU 风扇开始工作，但没有显示？(When you turn on your PC, light and CPU fans start working, but there is no display?)好吧，别再看了！本指南将教您如何修复笔记本电脑开机但没有显示问题(display problem)。
如何修复PC打开但没有显示 (How to Fix PC Turns On But No Display )
您可以分析此哔声列表及其各自的响应以了解问题：
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没有哔声或连续哔声：(No beep or Continuous beep sound:)如果打开 PC 时 没有哔声，则表明(beep sound)电源(power supply)、系统板(system board)和RAM存在问题。
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一声长长的哔声和一声短促的哔声：(Single long beep along with a single short beep sound:)这表明系统主板有问题(system motherboard problem)。
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一声长哔声和两声短哔声：(Single long beep along with two short beep sound:)这意味着显示适配器有问题(display adapter problem)。
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一声长哔声和三声短哔声：(Single long beep along with a three short beep sound:)表示增强型图形适配器(Enhanced Graphics adapter)存在问题。
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三声长哔声：(Three long beep sounds:)这些声音是指与 3270键盘卡(keyboard card)有关的问题。
方法 1：重启你的电脑
(Method 1: Restart Your PC
)
确保(Make)您的 PC 从完全关机状态打开。在某些情况下，您的计算机在从待机或睡眠(standby or sleep)或从省电模式恢复时可能会遇到问题，这会导致计算机打开但显示器未打开。
方法 2：对 PC 显示器进行故障排除(Method 2: Troubleshoot PC Monitor)
如果您的计算机已打开但屏幕为黑色，请通过检查电源指示灯确认显示器已打开。显示器和CPU(CPU)之间的连接不良也可能是电脑开机但没有显示问题(display issue)的原因。将显示器重新连接到计算机可能会解决此问题。
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按住(Press-hold) 电源按钮(power button)，直到您的计算机完全关闭。
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拔下(Unplug the video cable)将显示器连接到计算机的视频电缆。
- 检查显示器和计算机(monitor and computer)上的端口连接器(port connectors)是否损坏。
- 确保(Make sure)电缆没有损坏。如果需要，更换它。然后，重新连接电缆(reconnect the cable)。
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打开您的 PC(Turn on your PC)并检查问题是否已解决。
另请阅读：(Also Read:)如何解决计算机显示器显示问题(Fix Computer Monitor Display Problems)
方法 3：断开所有外围设备(Method 3: Disconnect All Peripherals)
在某些情况下，连接到计算机的特定外围设备可能会导致显示屏不显示。因此(Hence)，请尝试断开所有外围设备，如下所示：
- 关闭电脑并断开所有(Disconnect all) 外围设备(peripherals)，如打印机、扫描仪、鼠标等。
- 此外，弹出连接到 PC 的 DVD(eject DVDs)、光盘(Compact Discs)或USB设备
注意：(Note:)建议您正确移除外部设备以避免任何数据丢失。
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打开(Turn on)你的电脑。如果它启动，则表示其中一个外围设备导致笔记本电脑开机但没有显示问题(display problem)。
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(Reconnect) 将每个外围设备一个一个(each peripheral)重新连接回您的计算机(computer one)，以识别导致故障的设备。
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(Replace the) 发现故障设备(malfunctioning device)时更换。
方法四：更换显卡和扩展卡(Method 4: Replace Video Card & Expansion Cards)
视频卡也可能像任何其他(Video)计算机组件(computer component)一样损坏或过时。它也可能会过热和损坏。因此(Hence)，您可以用与显示器兼容的新显卡更换现有显卡。(replace existing video card with a new one)
扩展卡(expansion card)也是用于通过扩展总线(expansion bus)向系统添加功能的适配卡或附件卡。示例(Examples)包括声卡、显卡、网卡等。但是，这些扩展卡可能会引发系统问题并导致笔记本电脑开机但没有显示问题(display issue)。因此(Hence)，从系统中移除所有扩展卡(remove all expansion cards)并检查问题是否已解决。
另请阅读：(Also Read:)如何判断您的显卡(Graphics Card)是否正在死机
方法 5：断开所有电缆(Method 5: Disconnect All Cables)
如果您仍然遇到问题，建议您按照给定的步骤断开所有电缆：
- 断开所有电缆，即。VGA 线(VGA cable)、DVI 线(DVI cable)、HDMI cable, PS/2 cable, 音频和(Audio &) USB 线（(USB cables )电源线(power cable)除外）。
- 请稍等片刻，(wait for some time)然后重新连接(connect them back)。
- 确保在重新启动 Windows 台式机/笔记本电脑时听到典型的单一哔声。(beep sound)
此外，请阅读此处了解最流行的计算机电缆类型(Most Popular Computer Cable Types)及其与显示器型号的兼容性。
方法 6：重新安装内存模块(Method 6: Reseat Memory Module)
如果内存条(memory module)松动，可能会触发Windows desktop/laptop开机但没有显示问题(display problem)。在这种情况下，
- 关闭您的 PC 并移除计算机机箱(remove the computer case)。
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(Remove the memory module)从主板上的内存插槽中(memory slot)取出内存模块。
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(Put it back)过一段时间再放回去。
- 打开电脑。
这应该形成正确的连接，以便计算机可以识别内存并解决上述问题。
方法 7：重新安装 RAM(Method 7: Reinstall RAM )
RAM和主板之间的连接不良也可能导致 PC 开机但没有显示问题(display issue)。尝试重新安装内存(RAM)，如下：
- 关闭电脑并断开交流电源线(disconnect AC power cord )与电源的连接。
- 打开电脑机箱，从主板上的内存插槽中取出 RAM 。(remove RAM from memory slot)
- 然后，将其正确(place it properly)放置到位。
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将交流电源线连接(Connect AC power cord )回电源(power supply)并打开计算机。
另请阅读：(Also Read:)多少 RAM 才足够
方法 8：将 BIOS 设置重置为默认值(Method 8: Reset BIOS Settings to Default)
不正确的 BIOS(Improper BIOS)设置也可能是电脑开机但没有显示问题(display issue)的原因。在这种情况下，您可以尝试将BIOS(BIOS)设置重置为默认设置，如下所述：
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按(Press) 电源按钮(power button )，直到笔记本电脑/台式机完全关闭。
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断开交流电源线(Disconnect AC power cord )与电源的连接。
- 打开电脑机箱，使用非导电螺丝刀卸下主板上的 CMOS 电池。(remove CMOS battery )
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等待(Wait)几分钟，然后装回 CMOS 电池(install CMOS battery )。
- 将交流电源线(AC power cord )连接回电源并打开(power supply and Turn)您的 Windows PC。
另请阅读：(Also Read:)如何在 Windows 10 上进入 BIOS
方法 9：更换 CPU 风扇并冷却系统(Method 9: Replace CPU Fans & Cool The System )
另一种修复PC开机但没有显示问题(display problem)的方法是更换CPU风扇并冷却系统。持续不断的过热不仅会磨损内部组件，还会磨损您的 PC。此外，风扇开始以最高速度旋转，从而导致热节流。因此，我们强烈推荐以下内容：
- 始终确保保持计算机凉爽(computer cool)并保持适当的通风(maintain proper ventilation)。
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(Leave the system idle)当系统过热或连续使用后，让系统闲置一段时间。
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(Add better cooling systems)如果您的计算机有损坏的气流(air flow)电缆和灰尘堆积，请添加更好的冷却系统。
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(Replace the cooling fans)如果需要，更换冷却风扇。
推荐的：(Recommended:)
- 如何为电影永久添加(Movie Permanently)字幕(Subtitles)
- 修复(Fix)Windows 10黄(Yellow Screen)屏(Death)死机
- 如何修复笔记本电脑屏幕上的线条
- 修复 Windows 10 蓝屏错误
我们希望本指南对您有所帮助，您可以修复(fix) 笔记本电脑(Laptop) 或台式电脑开机但没有显示(or Desktop PC turns on but no display)问题。随时(Feel)在下面的评论部分中提出您的疑问或建议。
Fix PC Turns On But No Display
Sometimes, there may occur an issue of blank or black screen after turning on уour desktop or laptop. You may hear some odd beeping sounds too. This is a common issue faced by many Windows users. You may try to restart your system to solve this problem. But if the issue still persists, there may be faulty or malfunctioning hardware. When you turn on your PC, light and CPU fans start working, but there is no display? Well, look no further! This guide will teach you how to fix laptop PC turns on but no display problem.
How to Fix PC Turns On But No Display
You can analyze this list of beep sounds with their respective responses to understand the issue:
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No beep or Continuous beep sound: If there is no beep sound when the PC is turned on, it indicates a problem with the power supply, system board, and RAM.
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Single long beep along with a single short beep sound: This indicates a system motherboard problem.
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Single long beep along with two short beep sound: This means a display adapter problem.
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Single long beep along with a three short beep sound: It indicates issues with Enhanced Graphics adapter.
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Three long beep sounds: These sounds refer to an issue related to the 3270 keyboard card.
Method 1: Restart Your PC
Make sure that your PC is turning on from an entirely powered off state. In some cases, your computer may face trouble with resuming from standby or sleep or from power-saving mode, which results in the computer being turned on but not the monitor.
Method 2: Troubleshoot PC Monitor
If your computer is turned on but the screen is black, confirm that the monitor is turned on by checking the power lights. A poor connection between the monitor and the CPU may also be the reason for PC turns on but no display issue. Reconnecting the monitor to a computer may fix the issue.
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Press-hold power button until your computer completely turns off.
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Unplug the video cable which connects the monitor to the computer.
- Check the port connectors on the monitor and computer for any damage.
- Make sure that the cable is not damaged. Replace it, if required. Then, reconnect the cable.
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Turn on your PC and check whether the problem is fixed.
Also Read: How to Fix Computer Monitor Display Problems
Method 3: Disconnect All Peripherals
In some cases, specific peripherals connected to your computer may cause the display to not appear. Hence, try disconnecting all the peripherals as follows:
- Turn off the PC and Disconnect all peripherals like printer, scanner, mouse, etc.
- Also, eject DVDs, Compact Discs, or USB devices connected to your PC
Note: You are advised to remove the external devices properly to avoid any data loss.
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Turn on your computer. If it boots up, it means that one of the peripheral devices is causing laptop turns on but has no display problem.
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Reconnect each peripheral back into your computer one by one to identify the trouble-causing device.
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Replace the malfunctioning device when you find it.
Method 4: Replace Video Card & Expansion Cards
Video cards may also get damaged or outdated like any other computer component. It might also get overheated and damaged. Hence, you can replace existing video card with a new one that is compatible with the monitor.
An expansion card is also an adapter card or accessory card used to add functions to the system through the expansion bus. Examples include sound cards, graphics cards, network cards, etc. However, these expansion cards might trigger a problem in the system and cause the laptop turns on but no display issue. Hence, remove all expansion cards from the system and check if the problem is resolved.
Also Read: How to Tell If Your Graphics Card is Dying
Method 5: Disconnect All Cables
If you are still facing the issue, then it is suggested that you disconnect all cables by following the given steps:
- Disconnect all the cables viz. VGA cable, DVI cable, HDMI cable, PS/2 cable, Audio & USB cables from the computer except for the power cable.
- Please wait for some time and connect them back.
- Ensure that you hear a typical single beep sound while restarting your Windows desktop/laptop.
Also, read here to learn about Most Popular Computer Cable Types and their compatibility with monitor models.
Method 6: Reseat Memory Module
If the memory module is loose, it may trigger Windows desktop/laptop turns on but no display problem. In this case,
- Switch off your PC and remove the computer case.
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Remove the memory module from the memory slot on motherboard.
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Put it back after some time.
- Switch on the PC.
This should form a proper connection so that the computer can recognize the memory and the said issue is resolved.
Method 7: Reinstall RAM
A poor connection between the RAM and the motherboard may also cause PC turns on but no display issue. Try reinstalling the RAM, as follows:
- Turn off the PC and disconnect AC power cord from the power supply.
- Open your computer case and remove RAM from memory slot on the motherboard.
- Then, place it properly in its place.
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Connect AC power cord back to the power supply and turn on your computer.
Also Read: How Much RAM Is Enough
Method 8: Reset BIOS Settings to Default
Improper BIOS settings can also be the reason for PC turns on but no display issue. In this case, you can try resetting the BIOS settings to default, as explained below:
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Press power button until laptop/desktop completely turns off.
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Disconnect AC power cord from the power supply.
- Open the computer case and remove CMOS battery on the motherboard using a non-conducting screwdriver.
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Wait for a few minutes and then install CMOS battery back.
- Connect the AC power cord back to the power supply and Turn on your Windows PC.
Also Read: How to Enter BIOS on Windows 10
Method 9: Replace CPU Fans & Cool The System
Another method to fix PC turns on but no display problem is to replace the CPU fans and cool your system down. Constant and continuous overheating will wear down not only the internal components but also your PC. Moreover, fans start spinning with the highest speed which leads to thermal throttling. Do read Top 18 Best Fan Speed Controller Software.. Do read Top 18 Best Fan Speed Controller Software.. Thus, we stronlgy recommend the following:
- Always ensure to keep your computer cool and maintain proper ventilation.
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Leave the system idle for some time when it is subjected to overheating or after continuous usage.
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Add better cooling systems if your computer has damaged air flow cables and dust build-up.
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Replace the cooling fans if required.
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We hope that this guide was helpful and you could fix Laptop or Desktop PC turns on but no display issue. Feel free to drop your queries or suggestions in the comments section below.
