Category
Step-by-step fixes for Windows errors and PC problems: domain trust failures, high disk usage from SysMain (SuperFetch), SmartScreen blocks, rundll32 crashes, virtual machine errors, slow computers and simple hardware repairs.
PC Repairs
Back up first, diagnose before you fix, and work safely. These beginner computer repair tips cover slow PCs, crashes, overheating, no sound, Wi-Fi and PCs that won't start.
7 min read
PC Repairs
The MEMORY_MANAGEMENT stop code means Windows hit a serious memory error. Test your RAM, update drivers, repair system files and check the disk, in that order.
6 min read
PC Repairs
Service Host: SysMain is the Windows service once called SuperFetch. It preloads apps into memory. Here's when its disk use is normal and how to disable it safely.
5 min read
PC Repairs
No sound on Windows 11? Check the output device first, then work through the troubleshooter, audio services and driver fixes in order.
6 min read
PC Repairs
This sign-in error means the PC's machine password no longer matches Active Directory. Repair the secure channel with one PowerShell command, or reset it and rejoin.
5 min read
PC Repairs
A slow PC almost always comes down to startup apps, a busy disk, low memory, a full drive, malware or an old hard drive. Here's how to find which one and fix it.
8 min read
PC Repairs
Laptop Wi-Fi not working? Check airplane mode and the Wi-Fi switch, then reset the network stack, the adapter driver and your router, in that order.
6 min read
PC Repairs
If the taskbar search box won't open, won't take typing or shows no results, restart the search process first. Then check the service, rebuild the index or reset search.
5 min read
PC Repairs
SmartScreen blocked an app it doesn't recognize. Here's how to check whether the app is safe and run just that one app, without switching protection off.
5 min read
PC Repairs
Error 0x80070005 means Windows Update was denied access to files or settings it needs. Check admin rights first, then reset the update components.
5 min read