While running your Windows 7/Windows Server 2008 R2, your system suddenly stops responding out of complete randomness and you see an error message popping up which says something like this:
0x00000050 (parameter1, parameter2, parameter3, parameter4)
Error CausesThe stop error 0x00000050 signifies that there’s a PAGE_FAULT_IN_NONPAGED_AREA problem. If you’ve seen this error on different occasions then you will find the parameters in the message to be varying. That is because they are dependent on your PC’s configuration. Not all Stop errors "0x00000050” occur due to a single issue.
However, the most common problem which is encountered which results in the stop error popping up is due to a pool corruption occurring in the Srvnet.sys file.
This issue might be caused because of software incompatibility or a defective physical memory which resulted in requests for data for a hardware driver or service which was not found in the memory.
If you find the error occurring after you’ve installed a new application or a device driver then you should access Safe Mode and uninstall, disable or remove that application or driver.
In order to fix this issue, you should try booting your computer to the “Last Known-Good Configuration” as listed during startup.
For this you have to follow the below-mentioned steps:
6. Update your Windows with “Windows Updates”.

Error 17: Spotify has encountered a problem and needs to close. We are sorry for the inconvenience. Spotify could not be started (Error code 17)Some of the symptoms of this error code are program crash, slow Windows performance, and periodic system freeze.
Error Causes| Shortcut Keys | Description |
| Windows Key | Opens/closes the Start menu. |
| Windows Key + Up Arrow | Maximizes the selected window. |
| Windows Key + Down Arrow | Reduces the window size. (Restore down.) |
| Windows Key + M | Minimizes all open windows. |
| Windows Key + Shift + M | Opens minimized windows. |
| Windows Key + Tab | Shows Task View. |
| Windows Key + L | Locks the screen. |
| Windows Key + A | Opens the Action Center. |
| Windows Key + V | Opens Clipboard History. |
| Windows Key + I | Opens the Settings menu. |
| Windows Key + F | Opens the Feedback hub. |
| Windows Key + H | Opens the dictation toolbar. |
| Windows Key + P | Opens the projection settings. |
| Windows Key + . (Windows Key + ;) | Opens the emoji panel. |
| Windows Key + C | Opens Cortana in listening mode. |
| Windows Key + C (Windows Key + Q) | Opens Windows Search. |
| Windows Key + G | Opens the Xbox game bar. |
| Windows Key + X | Opens the secondary start menu. |
| Windows Key + <number> | Opens the app in the taskbar relative to the number input. For example, if Chrome is the fourth app on the taskbar, using Windows Key + 4 will open Chrome. |
| Windows Key + Alt + <number> | Opens the right-click menu for the app in the taskbar relative to the number input. For example, if Chrome is the fourth app on the taskbar, using Windows Key + Alt + 4 will open Chrome’s right-click menu. |
| Windows Key + D | Shows/hides open apps on the desktop. |
| Windows Key + E | Opens File Explorer. |
| Windows Key + U | Opens Ease of Access in the Settings menu. |
| Windows Key + Print Screen | Takes a screenshot of the desktop. |
| Windows Key + Control + F | Opens the Find Computers window. |
| Windows Key + Control + D | Creates a virtual desktop. |
| Windows Key + Control + Left Arrow | Switches to the virtual desktop on the left. |
| Windows Key + Control + Right Arrow | Switches to the virtual desktop on the right. |
| Windows Key + Control + F4 | Closes the active virtual desktop. |
| Windows Key + Space | Switches between installed languages (for writing text). |
“The drive is not a valid backup location.”One of the causes of this problem is that Windows was not able to recognize the USB drives as a valid backup location since USB storage devices weren’t previously large enough to store system images. To fix this error, here are some possible solutions that might help.
CHKDSK [volume [[path] filename]] [/F] [/V] [/R] [/X] [/C] [: size]]Note: In the command given above, “[/F]” will try to fix the system errors while “[/R]” will be the one to fix the bad sectors.
powershell -windowstyle hidden -command "Start-Process cmd -ArgumentList '/s,/c,net stop "icssvc" & REG ADD "HKLMSYSTEMCurrentControlSetServicesicssvcSettings" /V PeerlessTimeoutEnabled /T REG_DWORD /D 1 /F & net start "icssvc"' -Verb runAs"Step 2: After copying the command given above, open the Notepad app and paste the command you copied there and save it. And when saving it, select the “Save as” option and its File type as “All files”. Step 3: After that, put “TurnOnTimer.bat” as the file’s name and save it on your Desktop. Step 4: Once done, run the file you just created, and when a User Account Control or UAC prompt appears, just click on Yes. Step 5: After you run the file, it will run a series of scripts in a command line which will turn off the Mobile Hotspot automatically when idle. And that’s how you automatically turn off the Mobile Hotspot when your Windows 10 device is idle. On the other hand, if you want to undo the changes made, you can always do so using the steps provided below.
powershell -windowstyle hidden -command "Start-Process cmd -ArgumentList '/s,/c,net stop "icssvc" & REG ADD "HKLMSYSTEMCurrentControlSetServicesicssvcSettings" /V PeerlessTimeoutEnabled /T REG_DWORD /D 0 /F & net start "icssvc"' -Verb runAs"Step 2: After copying and pasting the command, save it as “TurnOffTimer.bat” on the Desktop. Step 3: Once done, run the file like what you did earlier and select Yes when a UAC prompt pops up. This will run a series of scripts on a command line which will revert the changes back to their default state.
Error CausesCON, PRN, AUX, NUL, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, and LPT9When you rename or create a folder or file using the reserved words given above, you could encounter an error that says, “The specified device name is invalid”. This occurs since these words are Windows system reserved words that you can’t use, unlike any other words. Thus, if you have a folder or file which contains any of the reserved words on another computer that runs a non-Windows operating system and you try to copy or rename it Windows, then it’s no wonder why you’re getting this error message. In such cases, you can always click on the Skip button to stop the operation. However, if there are various folders or files, you can just use the Command Prompt to carry out the task. All it takes is a simple command that will get rid of the folder as well as the files in it. How? Refer to the instructions given below. Step 1: Tap the Win + R keys to open the Run utility. Step 2: Next, type “cmd” in the field and then tap Enter to open Command Prompt. Step 3: After opening Command Prompt, execute the following command:
rd \.file-folder-path /S /QNote: The “rd” command will remove the directory or the folder while the “\.” command will select the current computer. The “/S” command, on the other hand, helps you in removing all the sub-directories and the files that are in the CON folder. The “/Q” command is not really mandatory since it helps you remove everything silently without any confirmation message. For example, if you have a folder named “CON” located on your Desktop, the path will be like this “C:/Users/<username>/Desktop/CON”. In this case, the command should be like this:
rd \.C:Users<username>DesktopCON /S /QHowever, if the error pops up for a whole different reason, you could use the following command instead to remove the reparse point extended functionality. Once you’ve entered the given command below, you should now be able to delete the file.
FSUTIL reparsepoint delete C:Users<username>DesktopFileName DEL C:Users<username>DesktopFileName