Computer Booted Once Wont Boot Again
You sit at your computer, push the power button but similar you do every day, and...zip happens. Maybe the figurer doesn't turn on at all, maybe information technology powers upward just shuts correct downward, or maybe all you get is a blueish screen. At that place'south null obviously wrong here, so why won't the computer simply start? Hither are some troubleshooting steps to accept.
Give It More Power
(Photo: Zlata Ivleva)
If your estimator isn't turning on at all—no fans are running, no lights are blinking, and cypher appears on screen—you probably accept a power event.
Unplug your computer and plug information technology straight into a wall outlet you know is working, rather than a power strip or bombardment backup that may be declining. Make sure the power switch on the dorsum of your power supply is flipped on, and if the outlet is connected to a light switch, brand sure that switch is turned on as well.
If yous're using a laptop, make certain your charger is plugged in properly and to the right port—if it charges via USB-C, simply some of the USB ports may actually provide power. A failing power supply tin can often crusade boot issues, even if the fans and lights practise plow on. And so if the troubleshooting steps in this guide fail you, information technology might exist time to replace your power supply.
Check Your Monitor
(Photograph: Zlata Ivleva)
If the calculator sounds similar it'southward turning on but y'all don't encounter anything on the screen, the computer may exist booting and the monitor just isn't showing an image. Check to make sure your monitor is plugged in (again, try a wall outlet instead of a power strip), turned on, and prepare to the right input using the buttons on the side or lesser.
Y'all'll also desire to make sure the cable connecting your monitor to your PC hasn't come up loose, become damaged, or is at error. If you can connect another reckoner to your monitor and get a motion-picture show, information technology may be the cable that needs replacing.
If yous're using a laptop, this may sound light-headed, merely make certain the effulgence is turned up. I've had multiple people ask me for help with a computer that won't start, but to find the brightness was turned all the way downwardly, causing a black screen.
If these fixes don't assist, endeavor plugging your PC into another monitor if y'all have one—or fifty-fifty a Tv—and see if Windows shows up there. If it does, your monitor may be dead, and you demand to buy a new 1.
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Listen for the Beep
(Photograph: Michael Sexton)
When your computer boots, it may make a beeping sound—usually a single beep means everything is A-Okay. But if the computer is having trouble starting up, information technology may make a serial of beeps (kind of similar Morse code) that tell yous what'due south incorrect.
Check the manual for your PC (or the PC'due south motherboard, if you built it yourself) and effigy out what the beeps hateful. If you don't have your transmission, you can probably find it on the manufacturer'southward website.
If your computer doesn't beep at all, you might be out of luck—though some desktop PCs may have a header on the motherboard where you can install a cheap speaker, or even a digital display with a numerical code that corresponds to an error message.
Unplug Unnecessary USB Devices
(Photo: Nor Gal/Shutterstock)
Before standing, unplug anything superfluous from your reckoner—webcams, external difficult drives, USB headsets. Try booting with just a keyboard and mouse (or even without a keyboard and mouse, if in dire straits) to see if ane of your USB devices is causing a conflict.
In some circumstances, it may non even exist the device itself, but the port on your computer. I've owned a PC that couldn't get into Windows if something was plugged into the front USB port—once booted, the ports would work fine, only it needed to be empty during the boot process. The more than variables you tin eliminate, the meliorate.
Reseat the Hardware Inside
(Photo: Zlata Ivleva)
There'southward a chance a component of your computer has come loose within the case, specially if information technology was recently transported somewhere or if you were working inside of it.
If you're comfortable opening your computer up, remove the side panel and make sure the components are properly seated in their corresponding sockets. That includes your RAM, graphics menu, motherboard cables, and the CPU heatsink. Remove them completely, then plug them back in, ensuring they click in all the way.
You might also try bootingwithout certain hardware, like the graphics card or i of the RAM sticks, in example they're faulty. (And if it doesn't work with one RAM stick, endeavour the other.)
Explore the BIOS
If your computer turns on and you run into the POST screen only tin't boot into Windows, sure settings may be causing a trouble. For instance, an error stating that your reckoner tin't notice a bootable operating arrangement may mean your BIOS is fix to boot from the wrong drive or your overclocking settings are causing the computer to blueish screen immediately.
Enter your BIOS when the POST screen appears, unremarkably by pressing Delete, F2, or another key to enter setup. If you've tweaked any of these settings recently, endeavor irresolute them back.
Brand sure your Boot Club is set to the correct difficult drive, your RAM is recognized, and that your CPU isn't overheating (if it's above ninety degrees Celsius in the BIOS, something is definitely wrong). You lot might too plough off the Fast Boot feature, in case a recent Windows Update is conflicting with information technology.
If all else fails, endeavour resetting your BIOS settings beyond the lath using the Load Optimized Defaults option. Just be certain to snap a few photos of your BIOS settings so you tin gear up them back if that doesn't work.
Scan for Viruses Using a Live CD
It'due south possible you have some nasty malware that's preventing your computer from booting. But with a alive environment like Hiren's Boot CD, you tin boot your calculator from a CD or USB drive and scan your hard drive for malware without booting into Windows.
Download the ISO image from this page, and follow the instructions to "burn" information technology to a USB flash drive. Reboot your computer and access the Boot menu—ordinarily by pressing F11, F12, or some other key defined at startup. Choose your USB drive from the boot card, and it should boot into Hiren's live environment.
From in that location, you can caput intoUtilities > Security and run a virus scan with ESET and a malware scan with Malwarebytes. If either plan finds anything, information technology'll let you know and effort to fix it, which will hopefully permit you to boot into Windows once again.
Boot Into Safe Way
(Illustration: Gunay Aliyeva/Getty Images)
If yous're getting the Blue Screen of Death at startup, it could be a result of a bad application, driver issue, or other hardware quirk causing bug on boot. If you tin can, Google the stop lawmaking that appears and see if it gives you any insight into what'southward incorrect.
Chances are, though, yous'll have to kick into Safety Way to set the problem. This used to be an piece of cake process in Windows 7, considering all you lot had to practice was press F8 as you booted upwards. Information technology is much trickier in Windows 10, simply usually if yous interrupt the boot process three times—say, by pressing the reset button equally Windows tries to kick—it'll accept you to the Automatic Repair screen, where you can click Advanced Options.
Alternatively, y'all can create a Windows installation drive using another PC and boot from that direct, choosing your language and selecting Repair Your Computer when given the pick. Either of these methods should eventually go you to the Choose an Option screen, where you tin can clickTroubleshoot > Advanced Options > Startup Settings and reboot the computer. (If you don't encounter the Startup Settings option, y'all may need to click See More Recovery Options along the bottom.)
Your computer should and so give yous the pick to kick into Safe Fashion, Safe Mode with Networking, or Safety Mode with Command Prompt. Yous can endeavor any of these, though the nigh minimal Safe Mode is probably your best bet, unless yous need to access the internet (in which case, choose Safe Mode with Networking). This will load Windows with simply the most crucial drivers and services running.
If you installed any new hardware recently, endeavor uninstalling its drivers from Safe Mode. If you think a new awarding might be to arraign, get rid of that too. BlueScreenView tin can help yous look back through your most recent Blue Screens of Decease to see the file that caused the trouble, or whatever issues check strings and codes to Google.
You might fifty-fifty try running Organisation Restore to try and get your PC dorsum to the last known working configuration. Reboot the PC normally to run across if it fixed the problem. If not, yous can enter Rubber Manner over again, or try moving on to i of the next troubleshooting steps in this guide.
Whorl Dorsum a Problematic Windows Update
If you recently installed a Windows Update—or you remember Windows may have done and so in the groundwork without you realizing—it may have caused a conflict that rendered your reckoner inoperable. It'south annoying, but thankfully, Windows does offering the pick to roll back to the previous version, fifty-fifty if you tin can't get into Windows itself.
Head back to theTroubleshoot > Advanced Options menu using the instructions higher up, and so choose Uninstall Updates. Endeavour uninstalling the latest Quality Update, or—if you lot recently tried to upgrade to a new major version of Windows x—uninstall the latest Feature Update. If you're lucky, this may get yous back into Windows, at which signal you can delay Windows updates until the kinks are worked out.
Check Your Hard Bulldoze for Abuse
It'south possible some data on the bulldoze is corrupt, preventing Windows from booting properly. Thankfully, Microsoft has a few tools that can attempt to fix the problem.
Head to theTroubleshoot > Advanced Options carte as described above and choose the Command Prompt. Blazonsfc /scannow and printing Enter. Windows will bank check your drive for corruption and endeavor to repair any problems.
You tin also endeavour thechkdsk C: /r command, which will exercise a broader search for file corruption and bad sectors. (If you accept multiple drives, you may want to runwmic logicaldisk get volumename,proper name and replace the bulldoze letter with the correct one from the resulting list.)
Repair a Busted Bootloader
Sometimes your Windows installation is fine, merely the bootloader—the data that governs Windows' kicking process—is corrupted. This often happens if you clone your hard drive improperly, in which case you tin can try the cloning process once again, making sure to clone theunabridged drive, not just the segmentation where Windows resides.
It tin also happen if you try to dual-boot Linux or create new bulldoze partitions and mess something upward along the way. You'll often get a message saying "Error loading operating system," "Invalid partitioning table," or "FATA: No bootable medium found! Arrangement halted."
If yous have a good backup, you can endeavor to repair the bootloader using Windows' congenital-in tools by going toTroubleshoot > Advanced Options every bit described above, and then choosing Startup Repair. I wouldn't attempt these steps unless you lot take your files backed upwardly, as messing with partitions tin always risk the loss of data. You lot can besides run the Control Prompt from this menu and attempt running 1 of the following commands:
bootrec /fixmbr
bootrec /fixboot
bootrec /rebuildbcd If that doesn't work, repairing your bootloader may be more than complicated due to newer EFI bootloaders—you tin can see instructions on doing and so here—merely it may exist easier and faster to reinstall Windows from scratch and restore from your backup.
Examination the Drive in Another PC and Pray
If all else fails and y'all don't have a backup, take your hard drive out of your computer, connect it to a USB adapter, dock, or enclosure, and plug information technology into some other known working PC. (Or, if you don't take another PC, endeavour booting from a Linux Live CD on your electric current machine.)
Every bit long as the drive is still working—a big "if"—you'll at to the lowest degree be able to copy your files onto an external bulldoze for safekeeping earlier you reinstall Windows or send the PC in for repairs.
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Source: https://www.pcmag.com/how-to/what-to-do-when-computer-wont-start
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