I apologize if I've posted this is the wrong place, but I wasn't sure where else to post it. After installing Ubuntu with Wubi, I set Ubuntu as the default OS in Windows and set the Windows boot menu to appear for 0 seconds in order to keep things as streamlined as possible. However, I now can't figure out how to boot back into Windows. I have tried pressing F8 and arrow keys as my computer boots up to no avail. I have no Windows repair disc, either.
If it makes any difference, I'm using a Lenovo B570.