on my laptop what would make some of my letter keys work only half of the time?
139421
Make sure that your keys are ok! If they work some times and dont other times go to http://housecall.trendmicro.com/ for free anti Virus/trojan/spyware/malware scan! And make sure that your keyboard layout settings are ok!
758262
Check ur keyboard settings in Control Panel.
324123
How long has this been going on?  Did you change anything or install any software prior to the problem surfacing?  Have you been surfing any warez sites?\n\nSomething is interfering with your keyboard.  You've done all the right things to date so I'd suggest that you look for something in the system itself.  Some process is messing things up.  When you hold down the shift key, the process eventually dies, releasing the keyboard for normal use.\n\nMy first inclination would be a keystroke logger or other spyware.  Install Spybot Search & Destroy and Windows Defender.  Update the defs and run a full scan with both products.  With luck, you'll find something and can remove it.
1009765
Call Ghost Busters!  Seriously though, that happened to me when I was using a hard mouse pad.  Try using a softer one.  It could be that when you are typing that simple action is causing the mouse to move the slightest bit if the pad is a hard one or you are not using a mouse pad at all.
1187235
u  have to enable the option use - shortcut keys option.\nit happens b'coz of low internet speed.
917193
You got a sticky ALT or CTRL key...
632886
you have NumPad "on" in your keyboard. Press combination of Fn + NumPad button to turn off numpad. after, make sure some light at top of your keyboard representing NumPad is lit off. It will work fine
575022
Sounds like your Tab key is stuck. Try giving it a few good presses and see if it still happens.\n\nAlso, make sure the ALT key doesn't double as a function key. Some laptops are liek that. If the ALT key has another number, letter, term, or picture on it besides "Alt", it probably acts as a multifunction key. If so, check for the function key and toggle it OFF.
351814
I agree with you it might be a virus, at least is something related to software, cause if it is a hardware problem, it either work or completely no, but not erratic response to keys. Since you can't type to set a virus scan, all you can do is to take of the harddrive and connect it to a pc which have the latest antivirus protection and scan the attached drive with it to start with.
784608
the easiest way to be sure it is just your keyboard is to borrow a good working keyboard from a friend or family member.  If that keyboard works, then you will know that you need to replace your keyboard.  Also, if you go to the "start" button and click "control panel" there will be an icon for "keyboard."  Open that one and be sure that no one has disabled the keyboard options.
986597
ur keyboard need to be cleaned  or try to use ur friend keyboard and see what will happen if it will work then ur keyboard has a problem if it didnt work then it may be ur software
1170907
Sounds like you have a different keyboard. He messed up the driver for it. If you have windows XP do a system restore and it will fix your problem without losing anything. If not. do a search for drivers for that keyboard.
529153
You are using a character on your keyboard that the login does not recognize or does not allow. Do not use dashes or any symbols that might be causing this.
587202
1. check connections\n2. check that the computer knows that the keyboard is connected to it.\n\nBut I wonder..... if your keyboard does not work, how could you type your question??
30524
You can get an inexpensive external number pad and use those arrow keys. It really works.\n\nThis one is a little pricey but should give you the idea:\nhttp://www.newegg.com/Product/Product.asp?Item=N82E16823192005
780490
Sounds like at least one key is sticky.  Coke (or any soda) will do that.  Carefully remove the keys in the area of where you spilled it and gently clean with a Q-tip and alcohol.  The worst that could happen has already happened - you cannot use the laptop.
319954
The "E" on the keyboard is faulty?