While the following issue seems a hardware issue, I included the Win10 newsgroup in a cross-post to cull expertise from there, too. Lots ofAs much as you would hate it, a bios reset to defaults just might fix it. Probably a 1 in 100
Win10 users also understand the hardware.
When I restart Windows (reboot the PC), the USB mouse and keyboard are
dead. They were okay before the restart (warm reboot), but unusable
after. This isn't a Windows problem per se since the keyboard is also
dead during the POST when I try to enter the BIOS system password, so,
for example, I cannot hit F2 to go into the BIOS screens. Windows
hasn't loaded yet. It is a hardware problem with the USB ports. While
I leave my desktop PC powered 24x7, sometimes I have to shutdown, like
for a Windows update (KB5041580 & KB5042352 done yesterday). To resolve
the dead USB keyboard and mouse, and after shutting down, I had to
unplug the power cord for a few seconds, plug it back in, and then tap
the Power button to start up to get the USB keyboard working again.
I have the BIOS configured to require a password on boot. This is an
added deterrent to unauthorized access to my desktop PC. It also
guarantees that any reboot of the computer won't start unless I'm at the computer. I hate unattended and unexpected reboots, like from Windows updates that will, with the Home edition, install an update, and then
reboot just because the WU client thinks my PC is idle during off-hours (there really are no off hours since my computer use is irregular for
when I'm using it).
The restart is not a full cold power boot when the USB keyboard is non-functional. This is for a Windows shutdown, or a 4-sec hold on the
Power button. I'm not in a low-power state, or [hybrid] hibernate
state. To most users, this would be a power-off state. However, the
power cord is still connected which means the 5 V standby power is still active from the ATX power supply to power the mobo's power-up logic.
When the desktop PC is powered off, *and* the power cord yanked, is when there is a full cold boot: no power to the PSU, so it cannot supply any power, like for the 5VSB line to the mobo. It really is fully off, and
will do a full cold boot.
This is a new problem. New as in newly experienced. Since I leave my desktop PC powered 24x7, then problem started between whenever I
previously power cycled my PC until yesterday to accommodate a Windows update. Keyboard was dead, so I couldn't enter the boot-time password
to then load Windows. Holding the Power switch to force a power down
(which, as noted above, is not a full power disconnect) didn't help.
Had to yank the power cord, wait, plug back in, and then power up to get
the USB keyboard working again.
While there was a Windows update which required a Windows restart (aka
warm reboot), I can't see how that would cause this problem. Windows
isn't even starting to load on a reboot when the BIOS password prompt appears. Not even the POST screen has yet appeared when the BIOS
password prompt appears. The USB keyboard and mouse have worked before during a warm reboot, so this showed up since whenever was my prior
reboot which was many weeks ago. Before yesterday the USB keyboard and
mouse would work on a warm reboot, like letting me go into the BIOS
config, or to enter the BIOS password at the prompt.
I did try using a different keyboard: the one I was using just prior to replacing it. Didn't like the feel and bounciness of the prior
keyboard's keys (Kensington), so got a better keyboard (Dell). Old and
new USB keyboards didn't work. Swapped to a new USB mouse, too, since
its primary button's switch was bouncing (somemtimes effecting multiple clicks), and I already needed to replace it, but that didn't help. Both
USB keyboard and USB mouse were dead on a warm reboot, but work on a
full cold reboot (yanking and plugging back in the power cord).
Why would USB ports become unresponsive on a warm reboot that were
working before? Why would yanking the power cord, so the PSU cannot
even supply 5VSB to the mobo's power-on logic, get the USB ports working again?
In the past, I thought a cold boot would have the CPU (or is it the
BIOS?) issue a reset signal to all connected devices to start them in a
known state. That meant I should see the keyboard's LEDs flash when it
got sent a reset. With this new problem, I don't see the keyboard LEDs
flash on a cold boot. I see the Numlock LED come on, but that's because
the BIOS is configured to turn on NumLock on startup.
The USB keyboard and USB mouse are not plugged into a USB hub. They are plugged into backpanel USB ports attached to the motherboard. All the backpanel USB ports are 3.1 gen 2.
This mobo does have a PS/2 combo port for mouse and keyboard, but I
haven't had a PS/2 keyboard for many years. PS/2 is interrupt driven,
so some gamers prefer it for response speed which is faster than the
polling hardware protocol used for USB ports, and N-key rollover is more robust for PS/2, but again not needed by me (I don't need to press 6
keys at the same time). I'd have to get USB/PS2 combo mice and
keyboards to use on the PS/2 port since the devices would need to have
the hardware protocol conversion built in (a passive adapter won't
convert a USB device to a PS2 device), or get dedicated PS2-only input devices. I have so many USB ports in this rig that I'm unconcerned
about losing the use of the PS/2 port. All the backpanel USB ports are
USB 3.1 gen 2. The only USB 2.0 ports are for a drive bay USB hub that connects to a USB2 header on the mobo. I don't want my keyboard and
mouse cords running to the front of the case to use the drive bay USB
hub. For a desktop PC, I don't want cordless mice and keyboards. I've
too often ran into problems inputting when the device's battery ends up
to low for the device to be reliable, and wireless makes little sense
for a computer and input devices that never move.
It's a pain to plug and replug the power cord on a warm reboot. I don't realize it is needed until I warm reboot to get the BIOS prompt to enter
a password. Oh yeah, unplug, wait a few seconds, plug back in, and then
tap the Power switch to start booting. This is a new procedure
requiring a cold (hard) reboot, and a cumbersome and interfering one.
Remember that this cannot be a Windows problem, because Windows hasn't
even a glimmer of code running yet. The PC reboots, the BIOS version appears, and the computer waits at the BIOS password prompt. Not even
the POST screen has yet appeared.
In the BIOS settings, there are the following:
- USB keyboard/remote power on
- USB mouse power on
Those are disabled, by default, and I don't recall ever changing those.
I don't want the PC waking up between I or someone else happened to
press a key or accidentally bumped the mouse. My PC is left powered
24x7. No low-power modes. No hibernate. No reason to have the
keyboard or mouse wake a computer that should already be awake, and if I power off then I want it to stay that way until I press the Power
button.
There is a "legacy USB support" which, I think by default, is enabled.
I thought that was to ensure PS/2 input devices were usable, but the
help says "Enable or disable Legacy OS support for USB 2.0 devices".
Whatever is its setting, it's been that way for maybe 4 years, or more,
for this build.
I do *NOT* use Fast Boot. That can make it impossible to get into BIOS settings, because the interval is miniscule when I can hit F2, and the
BIOS may not see me rapidly tapping F2, so it continues loading the OS.
Fast Boot also precludes booting from a USB storage device. As the
mobo's manual states, "Fast mode will boot so fast that the only way to
enter this UEFI Setup Utility is to Clear CMOS or run the Restart to
UEFI utility in Windows." No thanks. Don't need it. Don't want that.
I haven't touched UEFI/BIOS settings in a very long time, and I don't
see any settings that would disable the USB ports on a warm boot versus
them enabled for a cold boot (a full cold boot where the power cord has
been unplugged).
While the following issue seems a hardware issue, I included the Win10 newsgroup in a cross-post to cull expertise from there, too. Lots of
Win10 users also understand the hardware.
When I restart Windows (reboot the PC), the USB mouse and keyboard are
dead. They were okay before the restart (warm reboot), but unusable
after. This isn't a Windows problem per se since the keyboard is also
dead during the POST when I try to enter the BIOS system password, so,
for example, I cannot hit F2 to go into the BIOS screens. Windows
hasn't loaded yet. It is a hardware problem with the USB ports. While
I leave my desktop PC powered 24x7, sometimes I have to shutdown, like
for a Windows update (KB5041580 & KB5042352 done yesterday). To resolve
the dead USB keyboard and mouse, and after shutting down, I had to
unplug the power cord for a few seconds, plug it back in, and then tap
the Power button to start up to get the USB keyboard working again.
I have the BIOS configured to require a password on boot. This is an
added deterrent to unauthorized access to my desktop PC. It also
guarantees that any reboot of the computer won't start unless I'm at the computer. I hate unattended and unexpected reboots, like from Windows updates that will, with the Home edition, install an update, and then
reboot just because the WU client thinks my PC is idle during off-hours (there really are no off hours since my computer use is irregular for
when I'm using it).
The restart is not a full cold power boot when the USB keyboard is non-functional. This is for a Windows shutdown, or a 4-sec hold on the
Power button. I'm not in a low-power state, or [hybrid] hibernate
state. To most users, this would be a power-off state. However, the
power cord is still connected which means the 5 V standby power is still active from the ATX power supply to power the mobo's power-up logic.
When the desktop PC is powered off, *and* the power cord yanked, is when there is a full cold boot: no power to the PSU, so it cannot supply any power, like for the 5VSB line to the mobo. It really is fully off, and
will do a full cold boot.
This is a new problem. New as in newly experienced. Since I leave my desktop PC powered 24x7, then problem started between whenever I
previously power cycled my PC until yesterday to accommodate a Windows update. Keyboard was dead, so I couldn't enter the boot-time password
to then load Windows. Holding the Power switch to force a power down
(which, as noted above, is not a full power disconnect) didn't help.
Had to yank the power cord, wait, plug back in, and then power up to get
the USB keyboard working again.
While there was a Windows update which required a Windows restart (aka
warm reboot), I can't see how that would cause this problem. Windows
isn't even starting to load on a reboot when the BIOS password prompt appears. Not even the POST screen has yet appeared when the BIOS
password prompt appears. The USB keyboard and mouse have worked before during a warm reboot, so this showed up since whenever was my prior
reboot which was many weeks ago. Before yesterday the USB keyboard and
mouse would work on a warm reboot, like letting me go into the BIOS
config, or to enter the BIOS password at the prompt.
I did try using a different keyboard: the one I was using just prior to replacing it. Didn't like the feel and bounciness of the prior
keyboard's keys (Kensington), so got a better keyboard (Dell). Old and
new USB keyboards didn't work. Swapped to a new USB mouse, too, since
its primary button's switch was bouncing (somemtimes effecting multiple clicks), and I already needed to replace it, but that didn't help. Both
USB keyboard and USB mouse were dead on a warm reboot, but work on a
full cold reboot (yanking and plugging back in the power cord).
Why would USB ports become unresponsive on a warm reboot that were
working before? Why would yanking the power cord, so the PSU cannot
even supply 5VSB to the mobo's power-on logic, get the USB ports working again?
In the past, I thought a cold boot would have the CPU (or is it the
BIOS?) issue a reset signal to all connected devices to start them in a
known state. That meant I should see the keyboard's LEDs flash when it
got sent a reset. With this new problem, I don't see the keyboard LEDs
flash on a cold boot. I see the Numlock LED come on, but that's because
the BIOS is configured to turn on NumLock on startup.
The USB keyboard and USB mouse are not plugged into a USB hub. They are plugged into backpanel USB ports attached to the motherboard. All the backpanel USB ports are 3.1 gen 2.
This mobo does have a PS/2 combo port for mouse and keyboard, but I
haven't had a PS/2 keyboard for many years. PS/2 is interrupt driven,
so some gamers prefer it for response speed which is faster than the
polling hardware protocol used for USB ports, and N-key rollover is more robust for PS/2, but again not needed by me (I don't need to press 6
keys at the same time). I'd have to get USB/PS2 combo mice and
keyboards to use on the PS/2 port since the devices would need to have
the hardware protocol conversion built in (a passive adapter won't
convert a USB device to a PS2 device), or get dedicated PS2-only input devices. I have so many USB ports in this rig that I'm unconcerned
about losing the use of the PS/2 port. All the backpanel USB ports are
USB 3.1 gen 2. The only USB 2.0 ports are for a drive bay USB hub that connects to a USB2 header on the mobo. I don't want my keyboard and
mouse cords running to the front of the case to use the drive bay USB
hub. For a desktop PC, I don't want cordless mice and keyboards. I've
too often ran into problems inputting when the device's battery ends up
to low for the device to be reliable, and wireless makes little sense
for a computer and input devices that never move.
It's a pain to plug and replug the power cord on a warm reboot. I don't realize it is needed until I warm reboot to get the BIOS prompt to enter
a password. Oh yeah, unplug, wait a few seconds, plug back in, and then
tap the Power switch to start booting. This is a new procedure
requiring a cold (hard) reboot, and a cumbersome and interfering one.
Remember that this cannot be a Windows problem, because Windows hasn't
even a glimmer of code running yet. The PC reboots, the BIOS version appears, and the computer waits at the BIOS password prompt. Not even
the POST screen has yet appeared.
In the BIOS settings, there are the following:
- USB keyboard/remote power on
- USB mouse power on
Those are disabled, by default, and I don't recall ever changing those.
I don't want the PC waking up between I or someone else happened to
press a key or accidentally bumped the mouse. My PC is left powered
24x7. No low-power modes. No hibernate. No reason to have the
keyboard or mouse wake a computer that should already be awake, and if I power off then I want it to stay that way until I press the Power
button.
There is a "legacy USB support" which, I think by default, is enabled.
I thought that was to ensure PS/2 input devices were usable, but the
help says "Enable or disable Legacy OS support for USB 2.0 devices".
Whatever is its setting, it's been that way for maybe 4 years, or more,
for this build.
I do *NOT* use Fast Boot. That can make it impossible to get into BIOS settings, because the interval is miniscule when I can hit F2, and the
BIOS may not see me rapidly tapping F2, so it continues loading the OS.
Fast Boot also precludes booting from a USB storage device. As the
mobo's manual states, "Fast mode will boot so fast that the only way to
enter this UEFI Setup Utility is to Clear CMOS or run the Restart to
UEFI utility in Windows." No thanks. Don't need it. Don't want that.
I haven't touched UEFI/BIOS settings in a very long time, and I don't
see any settings that would disable the USB ports on a warm boot versus
them enabled for a cold boot (a full cold boot where the power cord has
been unplugged).
Linux has the ability to "eject" even USB mass storage devices, in such
a way they cannot be "used" on a subsequent warm boot. You can certainly unplug and replug the device, and it is then detect-able and usable again.
Someone did manage to lose their ports during Windows Update, due to something USB driver related. But this was a few years back now.
As to your opinion about PS/2, PS/2 is an example of a "port that works".
it works when USB has its knickers in a knot. If you have any vestige
of it left, it is certainly worth your while to buy any necessary
adapter so you can use it.
VanguardLH wrote:
While the following issue seems a hardware issue, I included the
Win10 newsgroup in a cross-post to cull expertise from there, too.
Lots of Win10 users also understand the hardware.
When I restart Windows (reboot the PC), the USB mouse and keyboard
are dead. They were okay before the restart (warm reboot), but
unusable after. This isn't a Windows problem per se since the
keyboard is also dead during the POST when I try to enter the BIOS
system password, so, for example, I cannot hit F2 to go into the
BIOS screens. Windows hasn't loaded yet. It is a hardware problem
with the USB ports. While I leave my desktop PC powered 24x7,
sometimes I have to shutdown ...
Shouldn't you have listed the hardware specification of your desktop
PC?
| Sysop: | Keyop |
|---|---|
| Location: | Huddersfield, West Yorkshire, UK |
| Users: | 507 |
| Nodes: | 16 (2 / 14) |
| Uptime: | 184:53:37 |
| Calls: | 9,958 |
| Files: | 13,825 |
| Messages: | 6,355,759 |
