How to Fix a PC that Has No Signal After CMOS Reset (STEPS)


Why Is My PC Have No Signal After CMOS Reset?

The main reason why your PC has no signal after a CMOS reset is because resetting the CMOS restores your BIOS or UEFI settings to its default settings. A dead CMOS battery or changing BIOS settings can result in a no signal error.

 

Possible Causes

  • Dead CMOS Battery
  • Factory default state
  • Loose connection

 

Dead CMOS Battery

A dead CMOS would not always result in a no-boot condition. It merely aids in the storage of BIOS settings.

A CMOS Checksum Error, on the other hand, might indicate a BIOS problem. If the PC does nothing when you turn it on, it might be the PSU or the motherboard.

 

Factory Default State

Resetting your BIOS returns it to the last stored configuration, so you may use it to roll back your computer after completing other modifications.

Whichever is the case, know that resetting your BIOS is a straightforward task for both new and expert users.

 

Loose Connection

A faulty connection between your display and your computer will cause the monitor to lose signal. If you get a no signal warning on your screen while your Windows system is operating, you should first verify that your suitable video connection is securely attached.

 

PC has no signal after CMOS reset

 

How To Fix A Computer That Has No Signal After Resetting CMOS?

To fix a computer that has no signal after resetting CMOS, you should remove the hard disk and restart the system after resetting CMOS. If it stops at a BIOS prompt that says, ‘boot failure, connect system disk and press enter.

Your RAM is probably fine because it POSTed properly. If this is the case, focus on the hard drive. Use your OS CD to do a Windows upgrade.

 

Possible Causes

  • Dead CMOS Battery
  • Factory default state
  • Loose connection

 

You can resolve most of these issues after identifying what may be causing these issues.

Let’s take a look at how you can troubleshoot each of these issues:

If you notice a button on your computer’s casing labeled “Clear” or “Reset,” press it to reset your CMOS. This is the simplest way. However, it is not suitable for all PCs.

 

  • Shut off your computer.
  • Unplug your PC from the power outlet. You can unhook the power source from the back or the wall socket.
  • Look for the “Clear” or “Reset” case button. It’s usually located close to or near the power button.

 

Why Clearing the CMOS Isn’t Resetting BIOS

If clearing the CMOS isn’t resetting BIOS, you should investigate for a hardware issue instead. Cleaning the CMOS restores your BIOS or UEFI settings to manufacturer defaults, which means the problem lies somewhere else.

 

This is how you clear the CMOS, the right way:

  • When you adjust the jumper, unplug the power. Failure to do so may result in motherboard damage
  • Setup the jumper and leave it on for at least 10-20 seconds
  • Return the jumper to its original position (or remove it altogether)
  • Reconnect the power and restart the computer

 

How to Reset CMOSBIOSSettings InWindows 11

If you set the incorrect BIOS settings or your system does not boot correctly, resetting the BIOS or UEFI to factory defaults can frequently fix the problem.

 

A virus can sometimes damage your BIOS. Custom BIOS settings will be lost with a reset. However, they may usually be readily restored.

 

If you can somehow boot your PC to the operating system and so enter Windows 11, here’s how to reset the BIOS:

  • The Basic Input/Output System, or BIOS, is a sort of software stored on the motherboard that would be the first element to boot up when you turn on your computer. The BIOS customizes the hardware and allows the device to boot the OS:
  • Navigate to the Menu Bar and choose the Power option
  • Then, while holding down the Shift key, select reset
  • The Advanced Startup screen would then appear on your PC
  • Now, select Troubleshoot
  • Then select Advanced Options
  • Then, choose UEFI Firmware Settings
  • When you click Restart, your computer will return to the BIOS menu
  • Using the arrow keys, navigate to the Exit tab
  • Enter after selecting Load Setup Defaults
  • Finally, in the check mark box, click Yes

 

In some situations, your PC may be unable to boot to the operating system or use any Windows function. If that’s the case for you, this is how to reset the BIOS without interfering with the operating system.

As quickly as your PC boots up, continue to press the following key, which corresponds to the brand of your laptop:

 

Acer: F2 or Del

Dell: F2 or F12

HP: F10

Lenovo: F1 or F2 

 

  • Try the Del, F2, or F10 keys if your computer isn’t mentioned here. Furthermore, you may need to hit the FN keys and the Functional key
  • Your computer will now boot to the BIOS menu. Select Load Setup Redirects from the Exit tab and clicks Enter
  • Click yes when the confirmation box appears

 

Can CMOS Battery Cause A Black Screen Or A No Display?

Yes, if there is a dead CMOS battery, there is a high chance that the BIOS loses its settings, which might result in a blank page. If it’s a CMOS battery, replace it and load the Optimal Settings in BIOS to see how things go.

 

Why Does My PC Show No Display After CMOS Reset?

The reason your PC shows no display after CMOS reset is because of a drained CMOS battery, a hard disk problem or GPU failure.



Possible Causes

  • It’s also conceivable that it’s a hard disk problem. However, you should see anything on the screen alerting you that the system can’t detect a boot drive
  • A GPU failure is also a possibility. As you mentioned, you wouldn’t receive anything here—nothing except a blank screen
  • If you see any BIOS-related information on the screen, there’s a strong likelihood it’s not a video card issue

However, a few factors might be causing your problem, so you’ll have to separate them first to figure out what’s going on.

Examining the hard disk in this manner is a good start. You might also consider installing an alternative hard disk (if you have one) to see what happens.

If it’s a CMOS battery, replace it and load the optimized settings in BIOS to see how things go.

 

I Changed TheCMOS Battery Now I Have No Display

If your CMOS battery is dead, there is a high chance that the BIOS has lost its settings, which might result in a blank page.

If it’s a CMOS battery, replace it and load the optimized settings in BIOS to see how things go.

 

Why Does My PC Have No Display After Changing BIOS Settings?

The reason your PC has no display after changing BIOS Settings is probably because the BIOS upgrade has drained the CMOS battery, there has been a faulty Windows installation or the PC has a malfunctioning motherboard or hard disk.

 

To fix this:

  • Turn off your computer. Remove all cords and external devices. I’m not sure what motherboard you’re using. Some motherboards have a reset button; whereas others do not.So operate accordingly.
  • If your motherboard lacks a reset button, you must use the CMOS battery. Changing it restores the screen for some users.
  • Locate the CMOS battery after turning off the PC, detaching the power cable, and extracting the screw:

 

To shorten the CMOS pins, use a jumper cover. As a jumper cap, you may use any tool or conductive medium

 

  1. Undo the jumper cap after pressing and holding it for five seconds
  2. Plug in the power wire and turn it on.
  3. Check to see whether the issue has been resolved

 

You cannot do this procedure on your laptop since practically every laptop lacks a jumper.

 

Why Do I See A Black Screen after CMOS Reset?

The reason you see a black screen after CMOS reset is because the upgrade drained the battery. If that’s not the case, it could be indicative of a possible manufacturing issue.

To fix this, remove the hard disk and restart the system to fix a computer that has no signal or a black screen after resetting CMOS.

If it stops at a BIOS prompt that says, ‘boot failure, connect system disk and press enter,’ your RAM is probably fine because it POSTed properly.

If this is the case, focus on the hard drive. Use your OS CD to do a Windows upgrade.

 

How To Fix The Black Screen After CMOS Reset?

To fix the black screen after CMOS reset, unplug the hard disk and restart the system. If it stops at a BIOS prompt that says, ‘boot failure, insert system disk and press enter,’ your RAM is probably fine because it POSTed successfully.

 

If this is the case, focus on the hard drive. Try running a Windows restore using your operating system DVD.

 

You should also:

  • Examine the Reset Button. Turn your computer off. Remove all cords and peripheral devices
  • Take out the Memory Battery. If your motherboard, like mine, lacks a reset button, you must depend on the CMOS battery
  • Jumper for CMOS
  • Long-press the power switch to force a shutdown
  • Disconnect your charger that is, the AC power source
  • Wait for 2-5 min before plugging in the AC adapter again
  • Click the start button once more. It will aid in the Restart of the BIOS upgrade
  • Don’t cause an interruption by doing anything you shouldn’t. Wait for your BIOS upgrade to finish
  • Start your device and tap and hold F2 as it boots up to open the BIOS utility
  • F9 will bring up the Default Settings. Enter your password
  • To restore and depart, press F10. Then hit Enter

 

Why Is My PC Not Booting After CMOS Reset?

The reason your PC is not booting after CMOS reset is because theboot sequence isn’t set to the right hard disk, your RAM is incompatible or your CPU is burning up. (If the temperature in the BIOS is greater than 90 degrees Celsius, there’s something wrong.)

 

To fix this:

  • Disable the Fast Boot option when a new Windows Update interferes with it
  • The laptop will not boot if the CMOS battery is dead or low. You’ll just lose the date and time
  • Wait 1–5 minutes before returning it to its original place. Turn on the system. To reset to factory defaults on some computers, you may need to enter BIOS

 

Why Windows 10 won’t boot after CMOS reset

The reason Windows 10 won’t bootafter CMOS reset is because the fast booting starting mechanism is activated on your system. Another possibility is that your system fails the Power-On Self-Test (POST) test, indicating a hardware issue.

 

Why Windows 11 Won’t Boot After CMOSReset

The reason Windows 11 won’t boot after CMOS reset is because you may have altered certain BIOS settings that aren’t permitted by your computer.

 

Another possibility is that your UEFI settings have been altered ora BIOS upgrade is causing this problem.

 

To fix this, you have to reset your CMOS settings:

  1. Turn off your computer.
  2. Remove your computer’s casing.
  3. Locate the CMOS pins. For 20 seconds, place a screwdriver or a metal item between the CMOS pins. In your browser, look up the location of your motherboard’s CMOS pins. Each motherboard is unique. The pins are located on your motherboard underneath the writing CMOS.
  4. After you’ve completed the preceding step, switch on your computer. Check to check if you can see the BIOS menu on your display.

 

How Long Does It Take To Boot After CMOS Reset?

It takes about 5 minutes to boot after CMOS reset. You will return to default mode, and all your BIOS settings should be reset to factory settings, requiring you to modify your BIOS settings to your existing hardware.

 

How to Clear CMOS without A Jumper

To clear CMOS without a jumper, power off and disconnect the computer.Then place a tiny bit of foil over ports 1 and 2, trying to make sure nothing else touches the piece of foil.

 

Do I Need To Clear CMOS While The PC Is Turned On?

No. Your PC wouldn’t clear CMOS properly until the PC is off.

  • Reseating the CMOS Battery Resets the CMOS
  • Switch off your computer
  • Disconnect your PC from the power supply
  • To remove any capacitors, repeatedly press the power button
  • Locate your motherboard’s CMOS battery
  • Disconnect the CMOS battery with care
  • After a few moments, replace the CMOS battery

 

What Happens When You Change TheCMOS Battery?

Changing the CMOS battery will enable your system to boot, but you would have to fix the date and time configurations, the machine will launch with the factory BIOS settings, and you’ll have to select the drive where the it is put each time you restart your computer.

 

Will Taking OutCMOS Battery Reset BIOS?

Not every motherboard contains a CMOS battery, giving motherboards power and allowing them to save BIOS settings. Remember that removing and replacing the CMOS battery will reboot your BIOS.

 

What Do I Need To Do After Replacing The CMOS Battery?

After replacing the battery, restart the computer and restore the CMOS settings to their defaults. After entering all of the information, make sure to save the settings before quitting.

Many CMOS configurations allow you to store values and leave with a single key push, such as F10.

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