Troubleshooting Windows guides?

SargassumCrab

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Oct 20, 2025
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Is there a good systematic troubleshooting guide to Windows? I'm looking for a flow chart sort of thing that you can look up an issue and it tells you to check A, B, C... etc. I passed A+ several years ago, but the solutions I was given often do not fix problems that I run into.

Examples:

I can't change the size of a partition on my SSD because a Windows recovery partition is in the way. Solutions I found online seemed "sketchy", but IDK if it even matters if I delete it and let it create a new one. Windows created a system partition on a brand new data SSD for some unknown reason. Windows likes creating partitions apparently...

I was just working on a neighbors awful Windows 7 never-updated machine with BSOD. The error code seemed to indicate some sort of driver error "IRQL_NOT_GREATER_OR_EQUAL". I tested the memory, SMART, and ran SFC, and it seemed ok. I checked Event Viewer and saw some networking related errors. The machine wouldn't run in safe mode with networking. I couldn't remove the NIC without dissassembling the whole thing (not my machine). Just in case something was wrong with Windows, I tried using DISM to update the install.wim file from a bootable disk offline, but I got "can't find file". I double checked the syntax, and tried a few variations, but nothing. Obviously I couldn't use the manufacturer driver utility to update/fix the firmware because networking didn't work. If it were my computer I'd just reinstall Windows, but it's not mine.

These sorts of things just make you feel like you have absolutely no idea what you are doing.
 

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