Question Should I worry about force shutting down system during memtest86?

[ericfah]

Anybody ever got no signal/black screen during memtest86?

I had my monitor set to VRR off while I playing PS5 on HDMI2, running memtest on HDMI1, however, I turned on VRR on hdmi2 playing a game, after that, when i switch back to HdMI1, I got no signal, just black screen, switching VRR off on HDMI2 doesn’t help. So I have to force shut down my PC manually.
When I reboot, everything seems fine.

Is this normal? The blackscreen? I never had it before..I can switch between 1 and 2 no problem, Am I damaging my ram or pc by force shut down during memory test??

I’m kind of worry now.

 

[boju]

No. Pc is designed to turn on or off whenever. The drama of uncontrolled shutdowns is during the OS and potential for corruption. Even then, the risk is minimal. Not to worry.

Why the black screen though while changing channel might have something to do with Hdmi handshake. Not sure on that one. Being in bios phase boot prior to loading Windows & gpu drivers might make this random.

 

[ericfah]

No. Pc is designed to turn on or off whenever. The drama of uncontrolled shutdowns is during the OS and potential for corruption. Even then, the risk is minimal. Not to worry.

Why the black screen though while changing channel might have something to do with Hdmi handshake. Not sure on that one. Being in bios phase boot prior to loading Windows & gpu drivers might make this random.

Thank u my friend, I thought memory test boot directly from USB (not log into system) is more likely to a bios update which should never shut down in duration or will cause serious problem. I guess I took it all wrong

 

[boju]

Thank u my friend, I thought memory test boot directly from USB (not log into system) is more likely to a bios update which should never shut down in duration or will cause serious problem. I guess I took it all wrong

Na, no different to booting usb distro of Linux. Bios updating process is completely different, powering off while updating is a sure way to go bald.

 

[JeffreyP55]

Once upon a time powering your PC off in anything other than the standard method was not in the recommended. It often caused data corruption.

 

[kanewolf]

Once upon a time powering your PC off in anything other than the standard method was not in the recommended. It often caused data corruption.

Yes, but memtest doesn't have any standard disks mounted. No significant risk.

 

[ericfah]

Once upon a time powering your PC off in anything other than the standard method was not in the recommended. It often caused data corruption.

But I assume it’s fine now? lOL. As long as it don’t damage my hardware. Im all fine

 

[kanewolf]

But I assume it’s fine now? lOL. As long as it don’t damage my hardware. Im all fine

The KEY is whether there are file systems mounted by an operating system. Cached data, not written to the physical disk or data cached on the disk not written to the physical media can be lost when power is randomly turned off. The impact of that missing data depends on where it should have been written. If it should have been an update to a data structure that describes the file system, then it could be bad. Disk writes, especially SSDs are 100s of times faster than physical disks used to be. That lowers the probability. Could you still get unlucky and wind up with a system that won't boot? It is not impossible.
The difference with memtest is that none of your disks are mounted while it is running. No file systems, no risk exposure.