我电脑内存有8G，一般也就用了1G多点，不论给这个虚拟机多少内存，在设置中也给虚拟机reserve了4096MB内存，但还是会报以下错，这是为什么呀。。。以前装过好几次都没有问题，唯一区别是变成WIN8系统。。有关系么=.=

Not enough physical memory is available to power on this virtual machine with its configured settings.
To fix this problem, increase the amount of physical memory for all virtual machines to 341 MB or adjust the additional memory settings to allow more virtual machine memory to be swapped.
If you were able to power on this virtual machine on this host computer in the past, try rebooting the host computer. Rebooting may allow you to use slightly more host memory to run virtual machines.