Computer Fundamentals Index

Computer Introduction Types of computer Characteristics of computer Uses of computer History of Computers

Computer Languages

Low Level language Middle level Language High level language

Computer Generation

Generation of Computers Second generation of Computers Third generation of Computers Fourth generation of Computers Fifth generation of Computers

Peripheral Devices

Input devices Output device


Block diagram and basic components Control processing unit (CPU) Software Hardware


Computer Memory Registers Memory Hierarchy RAM Vs ROM Understanding file sizes (Bytes, KB, MB, GB, TB, PB, EB, ZB, YB)

Computer Network

Types of Network Types of Area Networks (LAN, WAN, MAN) TCP Flags

Computer Virus

Computer Virus

Computer Ports

Computer Ports


How to hack a computer How much do Computer Programmers make How does a Computer work How to associate a file with a program How does a computer convert text into binary How does a computer process data into information How to fix a CD-ROM DVD How to fix the no input signal How to install computer memory How to associate a file with a program How to log out of your operating system How do I change my name on Google How to installation or uninstallation Microsoft Paint How to fix a not a valid Win32 application error How to fix missing Microsoft Windows .dll files How to use a computer keyboard How to erase my hard drive and start over How can I test how many words I can write a minute How to shut down a computer How do I open and edit the Windows registry How to edit the registry from the command line How to restart Microsoft Windows How to install a computer processor How to open Microsoft Paint How to fix problems in Windows after installing new software How to enable or disable the preview pane of Microsoft Outlook How to open a Microsoft .wps or Works file in Word How to view the HTML source code in Microsoft Word How to View or Change the Screen Resolution of a Monitor How to Connect and Install a Computer Keyboard How to Delete Temporary Files in Windows 10 How to determine Which Version of Microsoft Office I'm using How to find out how much hard drive space is available How to Fix PC Stuck on Verifying DMI Pool Data How to choose which items show in the notification area How to find similar images using Search by Image How to fix Low Memory and out of memory errors How To Replace the CMOS Battery How do I Update my Antivirus Program How to fix a general protection fault How to Identify problems in the Windows Device Manager How can the Base be Shown How to test if a Website or Web Page is down How Much is 1 Byte, Kilobyte, Megabyte, Gigabyte, etc


Who invented Computer What are the advantages of the Internet? What are the disadvantages of the Internet? Is my computer 64 bit? What is Edge Computing? What is a Router? What is Monitor What is Printer What is a Web Browser What is Microphone What is a Webcam What is PC What is Keyboard What is Motherboard What is WAP What is URL What is a Digital Assistant When was the first Computer Invented What is Modem What is Firmware What is Imperative Programming What is Protocol What is Safe Mode What is Device Driver What is Hybrid Topology What is Mesh Topology What is Procedural language What is a hyperlink What is a Username Who invented the Internet What is Video Card What is Sound Card What is Binary What does Alt+B do What does Alt+D do What does Alt+E do What does Alt+Esc do What does Alt+R do What does ALT + Q do What does Alt + Tab do What is Data Manipulation What is a touch screen What is Back Panel What is Analog Monitor What is AR lens What is an ATX Style Connector What is a File System What is Hard Disk Drive (HDD) What is a boot device What is accessibility What is Line In What is network Interface card (NIC) What is Optical Disk Where can I ask questions on the internet What is Auto Rotate What is CAD (Computer-aided design) What is Cable Modem What is Home Page What is boot menu What is braille reader What is flash memory What is Windows What is Clipboard What is Cyber Warfare What is Myspace Why has my IP address changed What is Jacquard Loom My computer is running slow, what steps can I do to fix it What is a Kensington Lock What is a multicore processor What is automation Are smartphones and tablets computers What is a Login Script What is a Loosely Typed Language What is Multitasking? Why my computer monitor shows no display or black screen What is REM What is Parallelization What is Overtype mode What is open with What is Bracket What is an Online Service What is REM What is Parallelization What is Overtype mode What is open with What is Bracket What is an Online Service What is the Pg Dn Key (Page Down Key) What is the Pg up Key (Page up Key) What is Palmtop Computer What is a Processing Device What is a Print Preview What is the Print Screen Key What can I do if my computer or laptop is lost or stolen What is a Model Number What are the currently available antivirus programs What are Toggle keys What is a Case fan What is a Silicon Chip What is a Slate PC What is a TAB stop What is an Octothorpe What is Task Pane What is Task View What is the svchost.exe file used for in Windows Where can I find free online virus scanners Why am I unable to increase the resolution in Windows What is Autofill When I click my mouse, it sometimes double-clicks What is Scratch What is UDIMM What is MsConfig What is an Expansion Card What is an Executable File What is an Elevated Command Prompt What is an AC Adapter What is AIMBOT What is a Software Suite What is a LED Monitor What does Alt + X do What does alt + space do What does Alt + O do Now that I’ve got a Computer, what can i do What is a Punch Card What is RDIMM What is Select All What is Serial number What is Thermos flask What programs can I use for speech recognition What are the Advantages of Computers What are the Disadvantages of Computers What does Alt + T do What Hardware Device Drivers should be Updated What is a Desktop What is a Ring Topology What is CMOS What is a Directory What is a Mechanical Mouse What is a Plotter What is a Variable What is an Icon What is Data What is HDMI What is Remote What is Right-Click What is SMPS Why does my Laptop not turn on What is a Copyright What is a Cordless Mouse What is a CSV file What is a Joystick What is a Start Button What is a Taskbar What is an Alignment What is an Output Device What is Cat 5 What is Google Chrome What is Post


Difference between hardware and software Difference between multiprocessor and distributed systems Difference between Desktop and Laptop Difference between File and folder Difference between Hard Copy and Soft Copy Open Source Programs vs Closed Source Programs


Quantum Computing Computer Software Autoexec.bat and config.sys info Update an Antivirus Use of Internet Advantages and disadvantages of Email Computing Power Internet Explorer Shortcut Keys Advanced Encryption Standard (AES) Augmented Reality Infrastructure Readiness Check Top 10 Internet tips and tricks Introduction and Features of FoxPro Features of Multimedia Top 10 online services and applications Receiving S.M.A.R.T. status bad backup and replacing error Version Control System Uninstalling Software or Apps in Windows Data Warehouse Increase or decrease font size in Word using keyboard shortcuts Mouse not detected or working in Windows Computer Cleaning Information and Steps Function Keys on Keyboard Windows 7 Alt+Tab won’t stay on top or stick

How to fix the "no input signal" error message?

How to fix the "no input signal" error message

How to fix the

If the computer monitor shows the error message, which is "No input Signal," try to troubleshoot the operation by following:

The computer is not transmitting a signal.

Please verify that the computer has power. If your system is turned off, it cannot transmit the signal, and because of it, the system will show a "no input signal" message on the screen.

Monitor not connected properly

Make sure that the display cable is securely and accurately plugged in on the backs of both the computer and the monitor. The VGA, DVI, HDMI, or DisplayPort connector on the monitor cable is used to attach it to the rear of your computer. The photos below provide examples of video card connectors for VGA, DVI, HDMI, and DisplayPort.

VGA Connector

How to fix the

DVI Connector

How to fix the

Modern Video Ports

How to fix the

By removing the cable from the back of the display and reconnecting it, you can make sure the monitor cable is not slack. In order to ensure sure, the cable is not slack, it is also a good idea to rock it back and forth.

Note: When disconnecting the cable, inspect the cable's termination to ensure that none of the pins is bent. The cable may be faulty and has to be replaced if any of its pins are bent or damaged.

The monitor wire should then be unplugged from the computer's back and reconnected. Please make sure the cable connection is secure while connecting it to the computer. Screws can be tightened to secure a VGA or DVI-style connector, such as the ones displayed above.

Note: A video card and an onboard video may be found in some systems. You will have two distinct connections for your display on the rear of your computer when using this kind of PC. If you see more than one and the display isn't working, try the other VGA, DVI, HDMI, or DisplayPort connections.

Incorrect input selected

VGA, DVI, HDMI, or DisplayPort connectors can be used to connect newer displays to computers. Use the appropriate input selection for these kinds of monitors. Use the buttons on the monitor's front or bottom edge to access the settings. Look for options to select the connector type and cable that your monitor uses (such as VGA, DVI, HDMI, or DisplayPort).

Bad hardware

The monitor or video card is likely broken if the connections appear to be in order. The motherboard of the computer might possibly be broken, which would prevent a signal from reaching the video card and monitor. Connect a different monitor to your computer or your display to a separate computer to determine which component is malfunctioning. Testing the motherboard for flaws is advised.

1. Your computer's monitor is broken if a different one works on it.

2. If your monitor works on another computer, your video card might be broken.

Note: If your computer has onboard video and you think your video card is broken, you need to get a new motherboard. Alternatives to replacing the motherboard include installing a new video card.

Computer not posting

Check to see if your machine starts up after the POST procedure. In some cases, if the POST procedure is unsuccessful and the computer cannot boot properly, the message "No input signal" may show.

The motherboard may be at fault if the POST procedure fails and the computer won't boot up. A computer motherboard failing the POST test is frequently caused by a fault in the motherboard or a defective capacitor.

The monitor works for a while, then loses signal

The monitor or computer may be overheating if it operates for a time before failing and showing the "No input signal" message. If the display overheats, it will switch off to prevent additional damage. If the computer overheats, it may stop sending a signal to the monitor and shut down to stop further damage of the computer hardware.

In most cases, fixing an overheating monitor is not worthwhile. It will probably cost more to fix than to purchase a new monitor. Because of this, we advise exchanging a hot monitor.

If the computer is overheating, the fans that keep the processor, video card, or power supply cool may have ceased functioning. Make sure the fans are spinning by checking them. When the computer is turned on, the fans must be replaced if they are not rotating at all. Utilize a software diagnostic tool, such as HWMonitor, to check the RPM of the fans if they are operating. The fans could not be rotating quickly enough, signaling that they need to be cleaned or replaced because they are damaged or clogged with dust.