It's probably easy for a newcomer to the forum to think we are MS employees because the people give so much of their free time - don't worry.
Some people do have problems with the inbuilt Windows Imaging. I use it all the time and it hasn't let me down. I also use Macrium Reflect (free)
as a safeguard. This is excellent software and highly regarded on this forum. Give it a go.
Suggestion: Don't make big images. Try to keep your OS and installed programs (including page file) on one partition. Put your data on a separate partition.
Make sure you have a backup strategy for your data partition of course BUT your OS partition will be the one most likely to get fouled up and require a reimage. This will typically be ~50GB or less and imaging/reimaging times on a USB2 external ~40 min. This is a convenient timeframe to keep multiple images and easily get yourself out of trouble quickly.
You can make a 4th primary data partition and a useful tool is Partition Wizard (see free program list). DON'T try to make more than 4 primaries