My HP Pavilion PC from time to time (maybe once a day) emits a "pffft" noise from the speaker in the LCD monitor, and shuts down without warning. It happens whether I'm on the internet or working locally. The monitor displays the 'Monitor is going to sleep' message and then almost immediately the HP logo is displayed and the PC goes through the normal boot-up routine. Any ideas what the cause might be, or how I can investigate further, please?
I've seen a couple of similar threads a couple of pages back in this forum, but their description doesn't sound the same as what mine is doing.
My PC is running Windows 10 64-bit with an AMD 12-9800 Radeon R7, 12 Compute Cores 4C+8G, 8.0GB RAM, AMD Radeon R7 Graphics.
Sometimes, as a workaround, disabling hibernation works with this issue. Find CMD (admin) and copy and paste powercfg -h off and press enter. Note that fast startup is also disabled so your boot time will be slightly longer.
If the issue still persists then simply use powercfg -h on to reinstate.
"Sometimes, as a workaround, disabling hibernation works with this issue. Find CMD (admin) and copy and paste powercfg -h off and press enter. Note that fast startup is also disabled so your boot time will be slightly longer."
I've tried that at the command prompt, but it wouldn't allow it. But I managed to execute the command in 'Administrator: Windows Powershell' -- or at least I think I executed the command, for there was no error message. I'll see how it goes.
12 days now since I executed the command that rdave13 mentioned, and so far my PC hasn't shut down unexpectedly. As mentioned, boot time is slightly longer, but that's no hardship compared with shutting down in the middle of a task.
Having clicked on 'Is the answer' it now says 'Is not the answer' against the post. That doesn't look right. Am I supposed to click on every post except the correct answer, so that they all display 'Is not the answer'?