Hi, this is the Small Basic programming language forum so moving where you may get better redirection.
You should state exactly which device you mean, which OS version (XP SP3, Win8.1 etc) and exactly which device driver (e.g. a link to its download loacation). For all of these it must be full details and probably the device manufacturer will be the
best bet for info. Sometimes the yellow rectangle in device manager refers to something that isn't a problem - if it is a processor not working then I would't expect to even start the PC so it may not be an issue at all.