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Question

Computer sometimes doesn't see mouse/keyboard/screen on boot

Aug 11, 2017 5:24AM PDT

Hello !

Whenever I shut down my computer it often doesn't see the mouse/screen/keyboard. To make it boot properly I need to unplog it and wait for a bit and after that it boots up normaly (aka sees everything).
Whenever I put it to sleep it also wakes up normally, albeit sometimes slowly. I'm wondering what the problem with this may be so that I'm forced to use this little trick to "fix" it.

Discussion is locked

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Clarification Request
What is this mystery PC?
Aug 11, 2017 11:52AM PDT

Also, try hibernate rather than sleep as sleep is problematic on some systems. I no longer fix sleep issues because of the time involved and the bill it can generate.

The slow wake is pretty easy to explain. As Windows wakes it has things to check. If you have some USB disk or stick, it has to see it it changed and many other things.

The less you have open when you sleep or hibernate, the less time it takes to get working again. This is not a bug. It's how it works.

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Thank you !
Aug 12, 2017 6:34AM PDT

Thanks and sorry I forgot to mention my spec if it's what you're asking for.

I'm still wondering though why when I do power off the pc It doesn't boot normally unless I do the power off shenanigans because it works very fine otherwise so it does not seem like a hardware failure ?


Here are the detailed specs :

---------- [Motherboard] ---------------------------------------
Property Value
Summary
Manufacturer ASUSTeK COMPUTER INC.
Model Z97-A
Version Rev 1.xx
Serial Number 140728200804632
Bridge
North Bridge Intel Haswell Revision 06
South Bridge Intel Z97 Revision 00
CPU
Name Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz
CPU Socket Socket 1150 LGA
Max CPU Speed 3800 MHz
Memory Summary Reported by BIOS
Memory Type DDR3
Installed Memory 8192.0 MB
Available Memory 8133.0 MB
Channels Dual
Maximum Capacity 32.0 GB
Maximum Memory Module Size [unknown]
Memory Slots 4
Error Correction None
System Slots
ISA 0
PCI 7
AGP 0
VL-BUS 0
EISA 0
PCMCIA 0
ExpressCard 0
MCA 0
---------- [CPU] -----------------------------------------------
Property Value
Summary
Number of Physical Processors 1
Number of Cores per Processor 4
Number of Logical Processors 4
CPU #1 Intel Core i5 4690K
CPU Name Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz
CPU Code Name Haswell
Vendor GenuineIntel
Family 6
Model 3C
Stepping 3
Revision C0
Microcode MU063C031C
Number of Bits 64
Instruction Set MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, ET64, XD, VMX, AES, AVX, AVX2, FMA3, EST
Platform Name Socket 1150 LGA
Max TDP 88.0 W
Technology 22 nm
Original Clock 3500 MHz
Original System Clock 100 MHz
Original Multiplier 35.0
CPU Clock 3500 MHz
System Clock 100.0 MHz
FSB [unknown]
Number of Cores 4
Core #1
Core #2
Core #3
Core #4
Turbo Boost Enabled
Virtual Technology Enabled
SLAT Supported
Hyper Threading Not Supported
Cache
L1 Data Cache 4 x 32 KBytes
L1 Instructions Cache 4 x 32 KBytes
L2 Cache 4 x 256 KBytes
L3 Cache 6144 KBytes

---------- [Memory] --------------------------------------------
Property Value
Memory Summary Reported by BIOS
Memory Type DDR3
Installed Memory 8192.0 MB
Available Memory 8133.0 MB
Channels Dual
Maximum Capacity 32.0 GB
Maximum Memory Module Size [unknown]
Memory Slots 4
Error Correction None
Memory Timings
Device Locator Slot 1
Memory Type DDR3 [PC3-12800]
Manufacturer G.Skill
Model F3-17000CL9-4GBXM
Serial Number [unknown]
Capacity 4096 MB
Speed 1600 MHz (800 x 2)
Manufacturing Date [unknown]
Form Factor [unknown]
Asset Tag [unknown]
Bank Locator [unknown]
Supported Frequencies 457 MHz;533 MHz;609 MHz;685 MHz;761 MHz;800 MHz;1066 MHz;1067 MHz
AMP SPD Support No
XMP SPD Support Yes (Version 1.3)
EPP SPD Support No
JEDEC Profiles
Device Locator Slot 2
Memory Type DDR3 [PC3-12800]
Manufacturer G.Skill
Model F3-17000CL9-4GBXM
Serial Number [unknown]
Capacity 4096 MB
Speed 1600 MHz (800 x 2)

---------GRaphic Card---------------
GeForce GTX 970


I can provide more specs if needed of course Happy Thank you once more for your help !

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Looks like a nice enough PC.
Aug 12, 2017 6:57AM PDT

A few things that reports don't tell us is where the USB keyboard and mouse are plugged in. A common cause for your top issue about KBD/Mouse not being seen is when these are plugged into the front USB ports. Move them to ports on the rear or try a few other ports that are on the motherboard.

As to sleep, try hibernation.

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Thanks !
Aug 12, 2017 2:14PM PDT

They are plugged in the back already and it's always been that way.

I'm quite puzzled because I turned it off normally for debugging purposes (aka to see the lights on the motherboard) and without doing anything specific it started normally but as far as I remember the screen didn't show the BIOS booting and was black until windows log in.

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That can be a sign of incorrect configuration.
Aug 12, 2017 2:24PM PDT

If you don't see the splash screen or BIOS that's usually a setup issue. I don't know your PC but when I see this (or don't) I usually have to hook the monitor to the onboard graphics to see the BIOS and set it to use the graphics card as primary or disable onboard video.

Also I might try BIOS defaults for the USB controllers.

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Well
Aug 13, 2017 1:23AM PDT

When I turned it on today everything worked properly which is once more quite puzzling.

I'll wait for a few days and report back if there are any other issues.

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Answer
Boot
Aug 12, 2017 11:24AM PDT

When's the last time you replaced the cmos battery?

As for sleep, try closing up stuff and backing it down to the desktop before using sleep.

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Never
Aug 12, 2017 2:15PM PDT

I never did that. So it's almost 4 years I have the same cmos battery.

I only mentionned sleep because from sleep the PC would normally see the whole screen/keyboard/mouse while on normal shutdown (without the shenanigans) it usually wouldn't.