Similar stories cropped up in support threads and bug reports. I believe in one or two recent cases, my computer has failed to start up (again, in this case the computer is on and running, but the screen stays black and nothing happens). If your PC suddenly wakes up from sleep mode, or won’t even enter sleep mode in the first place, you probably have the bug. But when a computer enters sleep mode, it temporarily shuts operations on the hard disk. While utility is running computer will not go into sleep mode because of. Almost every time my computer starts like normal, it seems to take a long time for the desktop to fully load At times, just by toggling the screen saver may even solve the issue. Dont let computer to sleep / standby / hibernate in Windows 7 and Windows 8. Sometimes it freezes and won't stop freezing if audio is playing when the computer freezes, the audio freezes as well and turns into this buzzing noise, and I have to wait for my computer to unfreeze enough so that I can set the volume to mute (in this case I hold down the power button to turn the computer off and then restart) Sometimes my computer fails to wake up from sleep mode (either when the computer is on and running, but the screen just stays black - or when my computer is on and it displays the lock screen, but does nothing and doesn't show the log-in window when I press the enter key) I have some issues wth my HP Pavilion Notebook: