I've got build 7100, I installed it last week on a custom made PC (I made it then aswel, this is its first OS) and it has all been fine until today.
Some programs (firefox for example) are unaffected but others will just refuse to run. Some programs just stop part way through installing and...
build 7100
crashes
custom pc
explorer
freezing
gamecopying
installation
log off
performance
programs
repair
shutting down
software
task manager
troubleshooting
usb issues
windows 7