My computer will boot up and actually reach to the Windows OS bootup, but after a new minutes, the screen will simply freeze. This freezing continues after each hard-reset, and the interval between the re-bootup and the freezing becomes shorter each time, to an extend that not even the motherboard's welcoming screen shows up. The freezing is also present even in BIOS. I cannot reinstall the windows OS, because every attempt, the screen freezes. And the time of my bios is always wrong. Can all of this be caused of the CMOS?