Hello, I'm trying to open the BIOS on my Windows 7 HCL desktop. I need to increase the dedicated video memory of my PC, as it is somewhat extremely low. I know that the key that opens the BIOS is DEL. As soon as I boot the computer, I start pressing the DEL button. But instead of the BIOS, it opens something called the "Windows Boot Manager". The Windows Boot Manager asks you which operating system you want to start and there's a memory diagnostic tool. There is also a set of advanced options, but it doesn't help. Any idea how I'm to start the BIOS and not the Boot Manager?