Member Avatar for Laeighty

Have e-machine t2692 / xp home ed.
Originally had 250w power supply. System died. Replaced with 300w power supply as recommended by e-machine. Everything came back up with the following exceptions:
speakers don't work (I can live with this)
none of the usb connections work (4 back & 2 front)
windows shuts down, but machine does not turn off (I turn off at surge strip)
From reading other's problems: I uninstalled the usb's and had the system find them again. It did. But still won't recognize anything plugged in.

I hope there is a simple solution, because I'm not a computer whiz.
Thanks for any help or tips.

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  • Latest Post Latest Post by GaryNH

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Quick expert summary and a focused troubleshooting path for the symptoms reported by : onboard audio dead, every USB port dead, and Windows shuts down but the box stays powered after a PSU swap. Earlier suggestions from and to check drivers and have Windows redetect devices were on the right track; ’s later note about using a PCI USB card is a valid fallback when the motherboard controller is toast. The checklist below prioritizes safe, non-destructive isolation steps.

Hardware and BIOS checks (do these first): power off and unplug, then open the case and visually inspect for burned components or loose connectors. Reseat the main ATX 20/24‑pin and the 4‑pin/8‑pin CPU power plug and any Molex/SATA plugs. Verify the front‑panel power‑switch header is on the correct pins and not shorting. Clear CMOS (remove the coin cell a few minutes) to restore default ACPI settings. On reboot, enter BIOS and confirm ACPI/power‑management is enabled and that USB controllers and “Legacy USB” support are turned on.

OS‑level diagnostics next: in Device Manager look for errors under “Universal Serial Bus controllers” and audio devices. Rather than only using Windows’ wizard, install the motherboard/chipset package from the OEM or the chipset vendor so USB host drivers are present. Test whether a USB keyboard works in BIOS — if ports are alive before Windows loads the problem is software/driver related. Booting a Linux live CD or WinPE is a quick way to tell whether USB/audio work outside the installed Windows.

If onboard hardware still fails: consider swapping in a known good PSU or having voltages checked (leave live-voltage checks to someone experienced). A powered USB hub or a PCI USB adapter is a practical workaround when onboard controllers or traces are damaged. Persistent failure to power off after shutdown, after CMOS reset and BIOS defaults, points to a motherboard or PSU issue rather than Windows; handle parts with ESD care and obtain local hands‑on help for voltage tests.

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All 6 Replies

Member Avatar for dlh6213

Try reinstalling the motherboard drivers, they should be on the restoration CD you got from eMachines.

Member Avatar for zach_boyce

Your first mistake was the eMachine lol :cheesy: but try hooking something up on your usb and then do a detect hardware wizard see if that works and for your sound try uninstalling it in the device manager and reinstalling it and updateing all the drivers

hope this helps
-Zach Boyce

Member Avatar for JANINE

Your first mistake was the eMachine lol :cheesy: but try hooking something up on your usb and then do a detect hardware wizard see if that works and for your sound try uninstalling it in the device manager and reinstalling it and updateing all the drivers

hope this helps
-Zach Boyce

there is absolutely nothing wrong with e-machines. not like packard bell i must say. PB - more trouble then anything and a customer service centre to be desirable:rolleyes: :twisted:

Member Avatar for GaryNH

Hello, did you ever solve this? I have the exact same problem with my Emachine currently, after replacing the power supply.

Thanks,

Gary

Member Avatar for tinabell2

Just wondering - I'm having the same problem after replacing the power supply (which I found out was a common, but easy fix). Did reinstalling the drivers for the motherboard help by chance? Before I drive down to their house, it would help to know if this suggestion helped or was at least a help in the right direction!
Much appreciated,
Christina

Member Avatar for GaryNH

Hi, nothing helped my situation. I ended up buying a 4 port USB 2.0 PCI card and installing it. Then had an IRQ conflict that I resolved. Now everything seems to work. Motherboard USB ports never came back to life.

Gary

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