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why does my computer restart for no reason

I've been experiencing some problems with my prebuilt gaming desktop randomly restarting for the past few months. No blue screen, no warning, just off and back on. While this happens, all internals remain powered on, right down to the LED lights inside the case. It seems to happen sporadically, I can go weeks without it happening, or I could have a day where it happens three times, but recently, it seems to be happening more frequently. It doesn't matter what I'm doing, because it has happened web browsing, gaming, and just staring at my desktop. I have done virus scans and disk scans, both showing no problems, but strangely, I have to manually turn McAfee back on every time. This leads me to believe it may be a software problem. I originally thought it was the power supply, so I replaced last week when I upgraded my GPU, but it's still giving me trouble. And for the record, this isn't a very old PC at all. I've had it less than a year. The only other thing I can think of is the RAM. I'm not an expert, but it looks like some cheapo no-brand RAM that seems a bit out of place in a PC built for gaming. CPU: AMD FX4300 Quad Core @ 3. 8 GHz
RAM: 8 GB 2003. 8 MHz dual channel DDR3 (no brand) GPU: XFX Radeon RX480, 8GB DDR5 VRAM Looking in Event Viewer, I found several "Critical" errors, all reading "The system has rebooted without shutting down first", as well as some errors that occurred at almost the exact same times as the criticals, reading "the system shutdown was unexpected". This are undoubtedly linked to the crashes, but I can't seem to find any reason for the crashes.

Also, on a somewhat related note, when this happens, my brand new HDMI-connected monitor doesn't regain signal. The only way to get it back is to hard restart the PC. Why does Windows restart without warning? This document is for computers that are by themselves and not. Since the release of Windows XP, Microsoft designed Windows to automatically reboot each time an error occurs, such as a. Although this may be nice for errors that do not occur often, users who have a re-occurring error may want to identify the error to troubleshoot it. Below are the steps on how this feature can be disabled and enabled in Windows XP, Vista, 7, and 8. From the, right-click on My Computer. Click the Properties option. In the System Properties, click the Advanced or the Advanced system settings link. In Advanced, click the Settings under Startup and Recovery. In the Startup and Recovery window, uncheck the Automatically restart check box. Click OK. Now if the computer generates an error, it should not automatically restart and should display an error message, most likely a BSoD. Some of the steps below require you to open your computer. While working inside the computer, be cautious of. Any failing hardware component in your computer could cause your computer to unexpectedly generate an error or reboot without warning. If you have recently attempted to add a new hardware device, remove that device to make sure it is not causing your issues.

Make sure you are not encountering any hardware conflicts by. Hardware drivers can also cause this issue. If you have recently installed new hardware drivers, you may want to try an earlier version of those drivers. Additional information and help with computer drivers can be found on our page. If you have updated drivers and removed any hardware that could be causing this issue and the random reboots continue to occur, it s possible that the memory is bad in the computer. Finally, hardware devices that are not installed properly in the computer can also cause random reboots. Make sure all the cables and are connected properly inside the computer. The best way to determine this is to disconnect and reconnect all cables and expansion cards. Some computer viruses, such as the, are designed to reboot your computer without warning. Usually these viruses make the computer reboot every 5, 10, 15 or 30 minutes after the computer has started up. If you believe your computer has a virus, make sure an is installed in your computer and that the virus scanner definitions are up to date. Most computers today are designed to turn off or automatically reboot if the computer, or other devices in the computer get too hot. If you have heard any abnormal noises coming from your computer recently, it could be an sign that a fan is failing which may cause hardware components to overheat. First, verify the fan on the is working by examining the back of the computer and seeing if the fan is moving in general, as well as moving fast and smoothly (e. g. , not wobbling or scraping against the insides of the power supply).

For all other in the, you need to and verify all fans are working (e. g. , fan, video card fan, and case fans). A, like the one shown in the picture, can also be used to help gauge how hot the hardware components or integrated circuits are inside the computer. If your monitors the speed, or, of the fans, enter the and verify it does not report any errors. If this is a, there is also a fan located on one of the sides of the laptop that can be checked. Make sure this fan is blowing air out of the laptop and check if you can feel hot air coming from the laptop. You may also consider getting a, if you find your laptop is getting hot often. If after following each of the recommendations above, your computer still continues to reboot, you are likely experiencing an issue with the Microsoft Windows operating system. To help determine if this is the case, try the steps below. Reboot the computer and enter when the computer begins to boot up. After you have loaded the computer into the CMOS setup, let the computer idle for a few minutes. If the computer does not reboot after idling in CMOS and you have tried the other solutions on this page, you can try activating a previous restore point in Windows before the problem started to occur. If activating a previous restore point does not work, or there are no restore points available to activate, you ll likely need to.

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