Crashes aren't just a part of using Windows operating system. If your PC consistently crashes there must be some reasons. Let's take a look at the most important reasons why Windows crashes frequently.
Problem of Memory or Motherboard
Many crashes, particularly those that result in a Blue Screen Of Death (BSOD), occur because of a memory or motherboard issue. This can result in a Fatal Exception Error, which means data that stored in memory could not be retrieved. You can test memory with a utility like Memtest86 or, in some cases, a built-in motherboard diagnostic tool. Another way to test is to simply swap in new memory and see if the issue goes away. If it does not, and the RAM you installed was correct, the motherboard may be the issue.
Improper BIOS Settings
Most motherboards come from the factory with default settings are compatible with many PC brands. Sometimes these settings might be altered by the PC's manufacturing company or individual. The settings should stick but they'll revert to default if the CMOS battery goes flat. That can cause your boot order to be re-arranged or put different components in conflict. Another common problem with boot order is a high placement of USB or CD-Drives. If you leave USB drive plugged in to your PC, and the BIOS is set to boot from USB first, your PC will not boot properly. You can change the boot order or simply remove the offending drive.
Corrupt PC Registry
The Windows Registry doesn't run into problems like it used to, but issues are still possible. A corrupt registry can cause a computer to crash or may prevent it from booting properly. Quality registry fix software can often fix this problem. If your computer will not boot properly try to run Windows in Safe Mode and run the software from there.
Corrupt Driver Software’s
All driver software tells to computer hardware what to do and how to do. If they aren't working properly they can cause crashes of operating system, even if the hardware is in perfect condition. Crashing of operating system of this type usually associated with an error message. Sometimes the error message will clearly name the offending hardware. If it does not, try running the message through Google to see if that helps you find the culprit. Once the hardware driver with a problem is identified you can search online for an updated driver and install it. If the problem persists, try completely uninstalling the driver and then re-installing it from scratch.
Hard Disk Drive (HDD) Problems
A hard disk drive failure causes of boot problems. If your computer mysteriously loses its ability to find the boot drive, but BIOS is properly configured, a hard disk drive issue is the culprit. Hard disk drive issues are also often behind crashes that occur only when opening a specific file. If you can still boot to the drive try running a free hard drive test to see if there's any obvious issues. A healthy report should give you cause to look else where for the problem, but a bad report means your drive has serious problem.
PC Hardware Conflicts
Windows can sometimes crash if it is receiving conflicting information from different pieces of hardware. This is called as a hardware conflict. You can see if there's a hardware conflict by opening the Device Manager. If a conflict exists it will be visible in this utility with a yellow and black exclamation icon. Take a look at the hardware that is conflicting and view its properties through the right-click menu to find more information. Sometimes the issue is caused by driver software. In other cases it can be caused by BIOS bad configuration or faulty with PC hardware.
May be Virus or Trojans
A virus or Trojan can cause serious problem to a PC. It might corrupt or remove drivers, delete important system files or change administrative settings. All of these can cause unexpected crashes in the operating system. Any fight against malware is usually lost the moment you notice it. The problem is that, once it's taken hold on your system, it's very difficult to trust that the methods you'd normally use to diagnose your PC are working as they should. The best way you can do is downloading a trusted antivirus and start scanning. If you can't seem to root out the malware you can format the hard disk drive and re-install Windows fresh. Then install latest anti-virus software with internet and firewall security to avoid attacks of virus, Trojans and malwares. Take your system backups in regular intervals.
Power issues
In some cases a persistent crash issue, particularly a random reboot or a BSOD caused by hardware you've verified to be working properly, is the result of a power issue. You should only turn to this possibility if you've eliminated all other possibilities. There are two potential causes to address. The most common problem is power supply, this problem with the supply that reduces the power it can deliver, or causes an uneven flow of power, can result in otherwise unexplainable crashes. The only solution for this problem is to replace the power supply.
System Software
Most of the system software errors will not cause Windows to crash. Both the operating system and the software that runs on the PC might have become more reliable over the years. But still, software issues can cause random lock-ups. The culprit is often obvious because the problem only occurs when that software is used. It will be less obvious if the problem software is running in the background.
In rare cases your PC might stop on boot because of software that runs automatically. You can usually resolve this by booting to safe mode and using msconfig to disable software that runs at boot.
Problem of Memory or Motherboard
Many crashes, particularly those that result in a Blue Screen Of Death (BSOD), occur because of a memory or motherboard issue. This can result in a Fatal Exception Error, which means data that stored in memory could not be retrieved. You can test memory with a utility like Memtest86 or, in some cases, a built-in motherboard diagnostic tool. Another way to test is to simply swap in new memory and see if the issue goes away. If it does not, and the RAM you installed was correct, the motherboard may be the issue.
Improper BIOS Settings
Most motherboards come from the factory with default settings are compatible with many PC brands. Sometimes these settings might be altered by the PC's manufacturing company or individual. The settings should stick but they'll revert to default if the CMOS battery goes flat. That can cause your boot order to be re-arranged or put different components in conflict. Another common problem with boot order is a high placement of USB or CD-Drives. If you leave USB drive plugged in to your PC, and the BIOS is set to boot from USB first, your PC will not boot properly. You can change the boot order or simply remove the offending drive.
Corrupt PC Registry
The Windows Registry doesn't run into problems like it used to, but issues are still possible. A corrupt registry can cause a computer to crash or may prevent it from booting properly. Quality registry fix software can often fix this problem. If your computer will not boot properly try to run Windows in Safe Mode and run the software from there.
Corrupt Driver Software’s
All driver software tells to computer hardware what to do and how to do. If they aren't working properly they can cause crashes of operating system, even if the hardware is in perfect condition. Crashing of operating system of this type usually associated with an error message. Sometimes the error message will clearly name the offending hardware. If it does not, try running the message through Google to see if that helps you find the culprit. Once the hardware driver with a problem is identified you can search online for an updated driver and install it. If the problem persists, try completely uninstalling the driver and then re-installing it from scratch.
Hard Disk Drive (HDD) Problems
A hard disk drive failure causes of boot problems. If your computer mysteriously loses its ability to find the boot drive, but BIOS is properly configured, a hard disk drive issue is the culprit. Hard disk drive issues are also often behind crashes that occur only when opening a specific file. If you can still boot to the drive try running a free hard drive test to see if there's any obvious issues. A healthy report should give you cause to look else where for the problem, but a bad report means your drive has serious problem.
PC Hardware Conflicts
Windows can sometimes crash if it is receiving conflicting information from different pieces of hardware. This is called as a hardware conflict. You can see if there's a hardware conflict by opening the Device Manager. If a conflict exists it will be visible in this utility with a yellow and black exclamation icon. Take a look at the hardware that is conflicting and view its properties through the right-click menu to find more information. Sometimes the issue is caused by driver software. In other cases it can be caused by BIOS bad configuration or faulty with PC hardware.
May be Virus or Trojans
A virus or Trojan can cause serious problem to a PC. It might corrupt or remove drivers, delete important system files or change administrative settings. All of these can cause unexpected crashes in the operating system. Any fight against malware is usually lost the moment you notice it. The problem is that, once it's taken hold on your system, it's very difficult to trust that the methods you'd normally use to diagnose your PC are working as they should. The best way you can do is downloading a trusted antivirus and start scanning. If you can't seem to root out the malware you can format the hard disk drive and re-install Windows fresh. Then install latest anti-virus software with internet and firewall security to avoid attacks of virus, Trojans and malwares. Take your system backups in regular intervals.
Power issues
In some cases a persistent crash issue, particularly a random reboot or a BSOD caused by hardware you've verified to be working properly, is the result of a power issue. You should only turn to this possibility if you've eliminated all other possibilities. There are two potential causes to address. The most common problem is power supply, this problem with the supply that reduces the power it can deliver, or causes an uneven flow of power, can result in otherwise unexplainable crashes. The only solution for this problem is to replace the power supply.
System Software
Most of the system software errors will not cause Windows to crash. Both the operating system and the software that runs on the PC might have become more reliable over the years. But still, software issues can cause random lock-ups. The culprit is often obvious because the problem only occurs when that software is used. It will be less obvious if the problem software is running in the background.
In rare cases your PC might stop on boot because of software that runs automatically. You can usually resolve this by booting to safe mode and using msconfig to disable software that runs at boot.
