It is not a coincidence that you have located drvhandler.exe process in your Task Manager. The chances are that your computer got recently contaminated with certain malicious software, or at least with some potentially unwanted utility (which doesn’t often make any difference). While drvhandler.exe process is active a lot of unexpected things could occur, such as various sudden pop-ups through your default browser, redirection issues, etc. In general, your PC will have the peculiarity of essential slowdown because of this particular process to be enabled. However, this is just a brief analysis and the real consequences of drvhandler.exe process for your PC could be really devastating in the short or long run.