Re: Microsoft Keyboard Causes Bootup to hang
From: Seelie (Seelie_at_discussions.microsoft.com)
Date: 06/25/04
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Date: Fri, 25 Jun 2004 08:44:53 -0700
Tim,
this is the most useful post I've seen yet.
Thanks,
-- Seelie "Tim" wrote: > Nic, > > Please try and answer the questions below. Someone may be able to point 100% > at the cause if you do... > > There are several things you could do to check earthing problems that > include checking the resistance between the earth plug on the mains cable > and the chassis on the PC - this should be zero ohms. Another is to check > the mounting of the PCB in the case. Cases have light metal flanges aroung > each IO socket on the rear. These are supposed to touch the socket mounted > on the mobo. They are there to stop EFI / RFI leakage. Also check that the > mobo has been mounted correctly. Most usually metal posts are supplied and > they provide earth conduction to the motherboard. > > If you did not have the correct chassis plate (IE none as some people have) > and a problem with the earth and .... a the keyboards USB cable plugged into > a self powered hub then... all sorts of things could go wrong. Earth is > there to protect things when things go wrong, so if there is no earth or > partial earth then small amounts of current can go all over the place. > Recently Paul stated something about PSU's pumping out a small flow to earth > being 'normal'. > > Have you tried the keyboard on another PC yet? > Have you tried another one of these keyboards you know is working from > another PC on your PC? > > When you plug in the keyboard, plug the keyboard directly into the PS/2 slot > & plug the USB mouse connector into the PS/2 style adapter (green) into the > adjacent Mouse port. Do *not* run the mouse through an intermediate USB hub. > The keyboard socket is always in the corner towards the edge of the PC. Is > this correct? If in doubt, pull the mouse out. If in doubt pull out *all* > USB stuff & external peripherals until this problem is solved. > > Check the keyboard plug does insert correctly. On several occasions I have > had plugs and adapters (like the green one) where the plastic is too far > down the sleeve to allow the plug to go in far enough - this is in part due > to the case. Checked? > > Do not unplug / plug in keyboards at run time. It may still happen that this > can blow an internal motherboard fuse or worse, there is no fuse there any > longer. (This used to be a problem, I don't know if it still is). > > You say the keyboard is an "Elite". Is this a bluetooth keyboard? If it is > the story may be different.... as I have the "Microsoft Wireless Natural > Multimedia keyboard" and am using that to describe everything.. > > HTH > - Tim > > > > > "Walmsley's" <nik.walmsleySPAMKILL@btinternet.com> wrote in message > news:c8kacc$de0$1@sparta.btinternet.com... > > Funy you should mention earthing, when I was disconnecting each component > > piece-by-poece, the audio Jack touched the metal at the rear of the PC > > (Whilst it was off) and it buzzes the speakers. Also, when I very first > > log > > onto my screen name, right after the windows start-up sound has finished > > playing, there is a little crackle from the speakers (Creative I-Trigue > > 2.1). > > > > I accept that a bad earth could cause problems, but wouldn't this affect > > wired & wireless alike? > > > > Just another thought. > > > > Nik. > > > > "Tim" <Tim@NoSpam.com> wrote in message > > news:c8jmfm$s69$1@lust.ihug.co.nz... > >> Hi, > >> > >> I have one of these & I know others that do too - no problems at all. > >> > >> 1st step: ascertain if there is a fault with your keyboard - try someone > >> elses on your machine & / or try yours on a machine with one already and > > see > >> if it works. > >> > >> This will actually tell you a couple of things: problem with keyboard, or > >> problem with system. I have read of mobos with earthing problems at the > > PS/2 > >> connector so you can't rule this out. > >> > >> Batteries? They're fine - been runnnig on one set of batteries since last > >> year - work all day every day. The batteries are NMH that are near their > > end > >> of life. Battery life is substantially better than the original wireless > >> devices. > >> > >> - Tim > >> > >> > >> "Walmsley's" <nik.walmsleySPAMKILL@btinternet.com> wrote in message > >> news:c8i63l$e7q$1@sparta.btinternet.com... > >> > Hi > >> > > >> > I've got a brand new PC (pre-built):- > >> > P4 3.2ghz HT > >> > 512mb ddr 400mhz RAM > >> > Asus P4P800SE Mo/Bo (Latest BIOS) > >> > 200GB S-ATA Maxtor Drive > >> > Windows XP Home > >> > > >> > I've connected a new Wireless Keyboard and mouse from Microsoft > >> > (optical > >> > wireless desktop Elite) - LATEST drivers > >> > > >> > The Wireless hub has 2 cables running from it. 1 is for the PS/2 > >> > connection > >> > to the PC, the other is USB for the mouse. > >> > > >> > When I connect the Keyboard to the PS/2 socket the system will not > >> > boot. > >> > It > >> > powers up, and the H/D light flickers away, but it will not send video > >> > signal to the Monitor, and pressing the power button again does not > > switch > >> > it off (I have to hold it for the 4 secs to power down.) > >> > > >> > If I hit the reset button, the whole thing fires up fine, > >> > If I connect a different Keyboard to the PS/2 it fires up fine. > >> > I've tried changing the wireless channel and this has no effect. > >> > If I disconnect the wireless K/B, power up with a different K/B, power > >> > down, > >> > reconnect the Wireless K/B, it fires up OK on the FIRST attempt ONLY. > >> > > >> > A very bizarre problem! > >> > > >> > I'm hoping someone else out there has had this problem, and solved it! > >> > > >> > Any advice on this greatly appreciated! > >> > > >> > Nik. > >> > > >> > -- > >> > ======================================================= > >> > Remove S P A M K I L L From my Email address to reply to me Directly > >> > ======================================================= > >> > > >> > > >> > >> > > > > > > >
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