[bernacks]

Hello,

I have an IBM / Lenovo T42 that is having issues with its two USB ports.

Every time I plug in a device such as a mouse, digital camera, keyboard, or blackberry to the USB my computer crashes and goes to a blue screen. The one exception is when I plug in my iPhone - it syncs, charges, etc and does everything properly.

When I plug in any device that isn't my iPhone it gives me a long blue screen error message for a few seconds and then restarts.

Here is the text of the bottom of the error message:

TECHNICAL INFORMATION

*** STOP: 0x0000007E (0xC0000005, 0xF79608E3, 0xF79C04E4)



I have run all windows updates and scanned for any viruses. Any further advice would be greatly appreciated.

Thank you very much for your time.

Steve

[DeputyDogg]

Sounds to me like conflicting or bad drivers. Have a look in Device Manager (Right-click My Computer - Click Properties - Hardware Tab - Device Manager). If there are any obvious drivers that need reinstalling/updating (yellow circle with black exclamation mark symbol) then do so. If not, I'd suggest uninstalling all peripheral drivers (i.e. drivers for the mouse, keyboard, camera, etc...and especially the iPhone drivers). Then shutdown the computer and reconnect the keyboard and mouse and restart. If the drivers aren't installed on restart, install them once the computer is up and running. If there are no problems, slowly start to connect each peripheral one by one and install its appropriate driver. Leave the iPhone till last (I'm singling this one out as it may be the one causing the conflict). Hopefully you won't have any problems, but if you do, this method should help you spot which device's driver is causing the conflict issue.

A further thought - before you start uninstalling and reinstalling, in Device Manager, click view and "Resources by type" - check that there are no conflicting memory addresses, etc. - it may be the assigned memory/IRQ (etc.) addresses are conflicting.

Remember to back up your system before you start uninstalling, just in case the problem isn't solved and you want to return to the systems state before attempting the fix.

[bernacks]

Thank you for your input -

I checked the memory/IRQ addresses. It seems that about 10 items have the same IRQ (PCI 11). I am not sure if that is a problem. If you don't think that is a potential source then I will start uninstalling all of the peripherals.

I appreciate your time.

Steve

[DeputyDogg]

It depends what the device is as to whether or not its ok if it shares an IRQ. For instance, USB controllers can handle upto 127 different devices before you have to start uninstalling drivers. What are some of the device types that are sharing this IRQ?

Either way, I'd uninstalling peripheral devices and reinstalling one by one. It doesn't take too long to do and is easily reversed as long as you backup before you begin. Remember to update any drivers from the manufacturers website once you've reinstalled them.