The “Unknown Hard” error that keeps on appearing in Windows 10 can put users in an unpleasant situation. This kind of error leads to the freezing of the taskbar, blackening of the screen, and sudden disappearance of the icons on the Desktop. And each time you try to open Windows, the system will only give you an error message saying that it’s a critical error and some applications like Start and Cortana won’t work.
Upon analysis, it seems that the “sihost.exe” is not responding and that it is the one that’s causing the c000021a Unknown Hard error to pop up. Sihost.exe files represent the Shell Infrastructure Host which is an essential component in the Windows operating system. The Windows Shell Infrastructure Host is primarily responsible for handling some graphical elements of the operating system interface such as the Start menu and the taskbar transparency. And so if the Shell Infrastructure or Sihost.exe has stopped, has been removed, or corrupted, you will most likely have issues with the overall functionality of the Windows operating system and you’ll get the Unknown Hard error
In addition, the ctfmom.exe Unknown Hard error may also occur due to incompatible drivers installed on your PC. Ctfmom is a process that identifies inputs such as handwriting, languages, and many more. It’s the one that controls the functions of background behavior. To resolve this issue, you need to first try to identify which application is the one that’s running the sihost.exe file. And if needed, you need to either update or reinstall or completely uninstall the problematic application.
The SFC Scan or System File Checker, us a built-in utility in Microsoft Windows that can be found in the C:\Windows\System32 folder. This tool allows users to scan and restore any corrupted system files in Windows that might be causing the Unknown Hard error to appear. Before you use this tool, make sure to find out whether the sihost.exe on your computer is a Trojan that you have to remove or if it’s a file that belongs to a trusted Windows application. Once you have that sorted out, follow the steps below.
The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:
You can also try using System Restore. This is one of the ways you can use it to back up your PC. Since restore points are created automatically each week by System Restore, you can use System Restore to restore your computer back to an earlier good point in time.
Putting your PC in a Clean Boot state can help you diagnose and troubleshoot the issues in your system. During this state, you can start the system with a minimum number of drivers and startup programs that will surely help you in isolating the root cause of the Unknown Hard Error.
After putting your PC in a Clean Boot State, try creating a system restore point and see if the problem still occurs. Clean Boot troubleshooting is designed to help you isolate the problem. For you to execute a clean boot troubleshooting, you must do a couple of actions (the steps are given above) and then restart your PC after every action. You might have to disable one third-party app after the other to really isolate the issue. And once you’ve narrowed down the problem, you can either disable the third-party app that’s causing the problem or remove it. Note that you must switch your PC back into the Normal Startup mode after you’re done troubleshooting the problem. Here’s how you can do it:
"We look forward to continuing our journey to bring Android apps to Windows 11 and the Microsoft Store through our collaboration with Amazon and Intel; this will start with a preview for Windows Insiders over the coming months,"The rest of the features will be all included inside Windows 11 on launch.
The New and upcoming HAF 700 Evo from Coller master is a beast of a case, but so is its price. The case itself is still not released but as sources say it will be soon, well at least we hope so. The price will be around $500 which is a little on the expensive side of things but the features it is bringing are very impressive.
HAF stands for High Airflow and with this case, you are going to get it but first let us talk about other characteristics of the case. Firstly case is ATX full tower, pretty big going 24.64 x 11.45. x 26.22 inches in size but like all full tower cases it can hold all motherboard types including Mini-ITX, Micro-ATX, ATX, E-ATX. The large case size also lets you place a pretty big GPU, going to 19.29 inches (490 mm) in its length covering currently all available Graphic cards on market.
Being a very big computer case is not just placing motherboard and big GPU, there are other great advantages of it, firstly that you can go wild with your CPU cooler, going all the way to 6.5 inches in cooler height will satisfy all users and having 12x 2.5 or 3.5-inch internal bays will. And if even that is not enough you have 8 expansion slots available.
Inside the casing you will also find 2 front fans with 200mm diameter, 2 rear fans sized 120mm, and 1 bottom fan of 120mm. You can also manually mount standard 120mm fans on top of the case for maximum airflow.
The front side is filled with 4x USB 3.2 Gen 1 Type-A (5 Gbps), 1X USB Type-C (up to 10Gbps), 3.5mm both headphone and audio jack along with a reset switch. Also, the circle in the very front is a hi-resolution LCD customizable display, you know, just to add more flavor and personal touch to the case. Fron is also filled with glass panels emitting RGB light.
Of course, you must also have a Tempered Glass Side Panel and well weight of 53.57 pounds (24.3 kg), yup you read that correctly, beside its hefty price tag this cooler master beast also is pretty heavy. Granted all of the weight comes from the glass front panel it is still a little hard on moving and taking out of the box.
This is also the case where you will not need a single screwdriver, everything is made to be assembled with your hands alone pushing easy assembly into the front row.
So in the end what are my thoughts about this expensive and heavy PC case? Would I recommend it? The answer to that question could depend really on your budget, let us be really honest here if you can afford it, YES, wholeheartedly I would recommend the case, it is great, it feels great, it looks great and the airflow is amazing. However, if you are tight on a budget, there are other great cases with excellent airflow and you might want to skip this one.
This error limits your ability to send and receive emails on Outlook. If you largely communicate at the workplace using your Outlook account, this error may slow down your work productivity and performance dramatically. Therefore it is advisable to fix it immediately.“There was a problem logging onto your mail server. Your User Name was rejected.”
This occurs when the Windows Firewall service is missing. The service doesn’t start due to permission errors on various registry keys. It is a critical blue screen of death error code that turns the computer screen blue and causes the Windows to shut down. If this error code is not fixed it may start appearing more and more frequently resulting in total system corruption.“There was an error opening the Windows Firewall with Advanced Security snap-in. The Windows Firewall with Advanced Security snap-in failed to load. Restart the Windows Firewall service on the computer you are managing. Error code: 0x6D9”