try:
1. start menu
type run, then from run (or simply from your pc press window icon+r)
type %temp%
and window tab will show up temp folder and try to delete those temporary files inside, some will not be deleted since they are currently in use.
2. try also to clean up files from your system config start up tab since some programs you uninstalled from your pc remains here (refer to attached images and delete them in the registry), also as mentioned above check only programs you wish to run during start up