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Pc won't boot unless kbd+mouse r disconnected

Last response: in Motherboards
January 16, 2009 4:00:37 AM



I knocked my tower over when I was reformatting it and now it won't boot. I'm not sure what my BIOS is because it won't get that far anymore but I can tell you this: on powerup, the keyboard lights up, the screen has a Dell bootup screen and the CD-ROM drive and hard drive will start turning. I get two short beeps and no boot. When I remove the USB mouse and PS/2 keyboard I get the normal 1 beep and it boots. In fact if I boot using KNOPPIX, and I plug the kbd and mouse back in as it's booting, then I can use them just fine.

I've taken out the RAM and put it back in but I don't know what else I should do or check. If anyone could point me in the right direction, I'll gladly tongue their earlobe. :pt1cable:  :kaola: 
January 16, 2009 9:33:25 AM

lol ewww,

Try reseting the CMOS. Does your mobo have a jumper that you can remove to disconnect the battery? or simply remove the battery for a couple of minutes, then replace.

This will return your BIOS to factory settings.
a b V Motherboard
January 16, 2009 11:58:56 AM

More than 1 beep generally indicated an error of some sort at boot time...something seems to be causing an error at boot.
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January 21, 2009 12:27:37 AM

I could try reseating the video card. I haven't done this yet. I should mention that I am getting a Dell screen right after hitting the power button so I assume this means the video card is making a connection and functioning.

I pulled out the CMOS battery and put it back in, and it didn't change anything.

I feel like there's something significant about the fact that it boots fine with the mouse and keyboard unplugged, but doesn't boot with them plugged in.
January 21, 2009 5:29:02 AM

Have you tried plugging in only the mouse with no keyboard and vise versa?
January 21, 2009 8:10:29 PM

I have. The mouse is USB and the keyboard is PS/2. If either one is plugged in I get the same problem -- 2 short beeps and no boot. If they're both unplugged I get the normal one beep and it boots.
January 24, 2009 2:47:55 AM

Anyone? I would have thought the keyboard/mouse thing would have narrowed this down.
January 24, 2009 3:47:03 AM

OK here's the solution, in case anyone else has a problem: I changed the configuration jumper so my bios was in maintenance mode. Then I set the BIOS to show the diagnostic screen on boot. Then right when the beep happened an error showed saying that it couldn't find the A drive (this is an old computer). I had recently unplugged the floppy drive since I haven't used a floppy in years.

In the future I'll be more specific about make and model, year etc.
January 24, 2009 3:47:31 AM

I really don't know if this would have to do anything with it, but maybe you should try updating drivers on all your hardware?
January 24, 2009 3:52:26 AM

Thanks, I solved the problem.