Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Keyboard not registering every keystroke

01 Apr 2010   #11
CommonTater

XP Pro SP3 X86 / Win7 Pro X86
 
 

Quote   Quote: Originally Posted by juanantoniod View Post
What I find interesting is that, today I had to execute some commands at the command prompt. Just simple things, but I was amazed that I could even tell the responsiveness of the keystrokes was better there, even though it was just a small difference between that, and say, Office. I think it is interesting because every "layer" of application creates a small delay between the hardware and the OS. Most people probably would not even notice it, but I type around 97 words per minute, so I can.
Interesting observation.

The keyboard input buffer in Windows is only something like 64 characters and the combination of hooks set by applications such as your fingerprint device and layers of software do indeed slow things down remarkably.

Part of the problem is the way windows handles user commands. These are rolled into an internal messaging loop that runs through all running software on the system. When you type a letter "A" Windows has to figure out which is the foreground window, which control in the window is selected, etc. Once this is done it sends a "message" to that window to display the letter A in the appropriate control. The control itself then has to figure out what to do with the A -- store it, process it as a command, reject it, etc.-- and then draw it on the screen.

The thing to understand is that this "message" is little more than a subroutine call that *does not return* until your input is processed. Get several of these hooked into the keyboard and it does indeed slow the whole system down... noticeably.

So, add this slowness to a fast typist and you're asking for keyboard buffer overruns... Literally you're typing faster than it can process the input data and characters get dropped.

I used to have the problem on win95/386 computers all the time and there's really nothing you're going to do about it... except slowing down (and yes as a touch typist I realize how difficult that is).


My System SpecsSystem Spec
.
01 Apr 2010   #12
richc46

Microsoft Community Contributor Award Recipient

Windows 10, Home Clean Install
 
 

Quote   Quote: Originally Posted by juanantoniod View Post
Quote   Quote: Originally Posted by richc46 View Post
Quote   Quote: Originally Posted by geoffparkin View Post
I have read all of the replies to my original question with interest, none of the solutions offered have worked, I am sure the problem lies within IE8, there may be a clash with another application. I may well be that we have to wait for a windows update to solve the problem.
If you think that the problem is with IE. Go to tools>internet options>advanced>reset. It will remove all the add-ons which you can restore later.
Hi Richard,

Thanks for the suggestion about resetting IE8. I am happy to do this, but I would like a way short of doing complete system backup and restore, of saving the settings before I wipe them all out. Does IE8 have a way of saving all of my personal settings, so I do not have to recreate them from "scratch"?

Best,

~Antonio
This is the MS suggested way of installing a new OS and saving all your settings. I would use Windows Easy Transfer. As a warning things can go wrong. Back up your important documents and pics on a sep hard drive, DVD or flash drive for safety.
Windows 7 features - Windows Easy Transfer - Microsoft Windows
My System SpecsSystem Spec
01 Apr 2010   #13
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Since I have exactly the same problem, I am following the suggestions with interest. I am, however, a very slow 2 finger typist and in my case the typing speed should not be an issue. And it happens only in reply boxes of forums (with IE8 - never tried another browser). No problem in Word or Wordpad or any other program.

My keyboard is wireless and I have 2 theories:

1. something interferes with the keyboard signal
2. some process interferes

Since the problem is only sporadic, I have not given it too much attention yet. But it sure is annoying when it occurs. Interesting point: the problem does not only happen here on this HP system but also in Germany (6000 miles away) when I am on my Dell system - same keyboard though but different operating systems.
My System SpecsSystem Spec
.

01 Apr 2010   #14
CommonTater

XP Pro SP3 X86 / Win7 Pro X86
 
 

Quote   Quote: Originally Posted by whs View Post
My keyboard is wireless and I have 2 theories:
Three questions...

1) How far are you from the receiver for your keyboard?
Some only have a working range of a couple of feet.

2) Are you using a wireless router?
How far is the keyboard receiver from the router antenna?

3) Are there any really big antennas in your neighborhood?
CBers and Ham radio operators have been known to interfere with computers (and visa versa)... especially wireless devices.
My System SpecsSystem Spec
01 Apr 2010   #15
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

1. Two feet
2. No - I have a hard wired Netgear switch.
3. Not to my knowledge. But there can always be something hidden in the houses. Houses are medium dense - about 2 or 3 per acre.
My System SpecsSystem Spec
01 Apr 2010   #16
CommonTater

XP Pro SP3 X86 / Win7 Pro X86
 
 

Quote   Quote: Originally Posted by whs View Post
1. Two feet
2. No - I have a hard wired Netgear switch.
3. Not to my knowledge. But there can always be something hidden in the houses. Houses are medium dense - about 2 or 3 per acre.
Hmmm... ok...

1) have you tested the range... i.e. backing away from the computer until it shuts down? It's probably no big deal, but it might help you to know.

2) ok

3) Could well be. A 100 watt transmitter (and some CBers use thousands) can mess you up from a couple of city blocks away...

4) Hmmmmmmmm....
My System SpecsSystem Spec
01 Apr 2010   #17
juanantoniod

Microsoft Windows 7 Home Premium 32-bit 7601 Multiprocessor Free Service Pack 1
 
 

Quote   Quote: Originally Posted by CommonTater View Post
Quote   Quote: Originally Posted by juanantoniod View Post
What I find interesting is that, today I had to execute some commands at the command prompt. Just simple things, but I was amazed that I could even tell the responsiveness of the keystrokes was better there, even though it was just a small difference between that, and say, Office. I think it is interesting because every "layer" of application creates a small delay between the hardware and the OS. Most people probably would not even notice it, but I type around 97 words per minute, so I can.
Interesting observation.

The keyboard input buffer in Windows is only something like 64 characters and the combination of hooks set by applications such as your fingerprint device and layers of software do indeed slow things down remarkably.

Part of the problem is the way windows handles user commands. These are rolled into an internal messaging loop that runs through all running software on the system. When you type a letter "A" Windows has to figure out which is the foreground window, which control in the window is selected, etc. Once this is done it sends a "message" to that window to display the letter A in the appropriate control. The control itself then has to figure out what to do with the A -- store it, process it as a command, reject it, etc.-- and then draw it on the screen.

The thing to understand is that this "message" is little more than a subroutine call that *does not return* until your input is processed. Get several of these hooked into the keyboard and it does indeed slow the whole system down... noticeably.

So, add this slowness to a fast typist and you're asking for keyboard buffer overruns... Literally you're typing faster than it can process the input data and characters get dropped.

I used to have the problem on win95/386 computers all the time and there's really nothing you're going to do about it... except slowing down (and yes as a touch typist I realize how difficult that is).
CommonTater,

Thanks for the confirmation about my dilemma. If I could only figure out which program was the "last straw", then I could simply get rid of it. I know the fingerprint reader could be causing it with its "hooks", but I have turned off all of the Website "catches" it does, so maybe that will help the problem. The weird thing is (and I know weird things are no staranger to computers) that I have had the same (as far as I can tell) installation and, until a few weeks ago, was not having this problem. But you are correct, as I type now, I can see that by slowing down on my typing, the problem is less apparent.

Maybe I will go through my system processes in the Task Manager and see if there is anything I recognize that is not needed, and maybe that will help.

I appreciate your help!

~Antonio
My System SpecsSystem Spec
01 Apr 2010   #18
CommonTater

XP Pro SP3 X86 / Win7 Pro X86
 
 

Quote   Quote: Originally Posted by juanantoniod View Post
Thanks for the confirmation about my dilemma. If I could only figure out which program was the "last straw", then I could simply get rid of it. I know the fingerprint reader could be causing it with its "hooks", but I have turned off all of the Website "catches" it does, so maybe that will help the problem. The weird thing is (and I know weird things are no staranger to computers) that I have had the same (as far as I can tell) installation and, until a few weeks ago, was not having this problem. But you are correct, as I type now, I can see that by slowing down on my typing, the problem is less apparent.

Maybe I will go through my system processes in the Task Manager and see if there is anything I recognize that is not needed, and maybe that will help.

I appreciate your help!

~Antonio
Hey the "which program" question is simple... disable them all and see what happens then add them back in one at a time (i.e. take one out and put the next one in) and see which one causes the lag... It could be something as simple as a minor incompatibility with Win7's more secure hooking procedures... or it could be, as you say, "the last straw". Not all programs hook the keyboard like a fingerprint, smart card or barcode device does, so there's no reason to blame Notepad (for example).

Good luck with this... I'm also a fairly quick typist and on occasion I can get 3 or 4 characters ahead of Win7 (never happened in XP)... but I'm not fast enough to overrun the keyboard buffer.... Although I once saw an estimate that the old 386/win95 machines topped out at about 60 words a minute...
My System SpecsSystem Spec
01 Apr 2010   #19
juanantoniod

Microsoft Windows 7 Home Premium 32-bit 7601 Multiprocessor Free Service Pack 1
 
 

Yes, I am taking your advice, and starting with my browser first. I am installing Chrome as we speak, since I know it has a small footprint. We will see how Webforms complete with that...
My System SpecsSystem Spec
01 Apr 2010   #20
CommonTater

XP Pro SP3 X86 / Win7 Pro X86
 
 

Quote   Quote: Originally Posted by juanantoniod View Post
Yes, I am taking your advice, and starting with my browser first. I am installing Chrome as we speak, since I know it has a small footprint. We will see how Webforms complete with that...
Good luck... A methodical approach usually is best... I hope you find it.
My System SpecsSystem Spec
Reply

 Keyboard not registering every keystroke




Thread Tools




Similar help and support threads
Thread Forum
Blinking OS! Every keystroke or mouseclick causes chaos
Very weird activity on spouse's computer. Started on Facebook with multiple windows opening and the dialog boxes getting looonnnng. I had him log off and change his password. When he tried to change it the screen dimmed with each click until it went black. I hit the off button and shut it down....
System Security
Specific Keystroke not Working
We have a new Windows 7 machine on which Ctrl + Alt + C doesn't register, al ALL. When trying to assign that keystroke within an application, MS Word for instance, and we click in the text box that "captures" the keystroke NOTHING happens in the text box. Its almost as if the operating system...
General Discussion
Keystroke or key for 'back' in Firefox????
This may not be a Windows 7 Home Premium issue but someone may be able to help anyway. Since replacing my XP laptop with a new Gateway NV52 laptop I've been noticing that, when typing online forum posts (on one particular forum site, using Firefox) I'll suddenly find that I've hit some key or...
Browsers & Mail
get back focus by keystroke
Hi I use multi media player (xbmc) on my secondary display. I launch it thanks to my remote which sends keystrokes. In fact it simulates a keyboard. Pressing F1 launches xbmc. As I m watching a video, if somebody works on the internet on the primary display, xbmc loses the focus and the...
General Discussion
Set multiple keystroke in single keystroke
hello all, I would like to remap my keyboard such that i can set, such as ctr+alt+del into one keystroke. Anyone know how to archive this. Currently i'm using Sharpkey to remap my keyboard. But somehow, that;s only work one to one keystroke. How to get mutiple to one keystroke thanks for...
General Discussion
Typing several characters with one keystroke
Can we customize a key so that when pressed it will type several characters? I would use that function to quickly enter my “user name” or email address when accessing internet pages that require filling such fields plus the Password. Thank you for any help. ACA
Customization


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 11:18.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App