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Re: usb ports not working
This can be a problem with the driver that controls your USB ports. Your drivers can be located here. Make sure they are up to date and try again. If it doesnt remedy the problem, it may be hardware related.
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If your mouse and keyboard work properly with another computer or laptop the problem could be :
A) if devices are USB :
- defective USB port : chose another USB port;
- USB port inactivated in BIOS : check and activate;
- motherboard defective : replace motherboard.
B) if devices are PS/2 :
- damaged PS/2 ports : buy a PS/2 to USB adapter for your mouse/keyboard or buy USB mouse and keyboard;
- motherboard defective : replace it.
Does the system respond to boot keys (F2, F12) when the DELL logo appears? If so the problem is with Windows drivers and probably can be resolved by reinstalling or rolling back the drivers, but how? Do you have access to another keyboard? Does the system have PS/2 ports? Do you have access to a PS/2 keyboard or adapter? If boot keys work, you could also choose F8 for Last Known Good Config (XP) or System Restore (Vista).
Have you tried different ports (front if using back or visa-versa)? Try using just keyboard or mouse to see if one has somehow shorted. Also check the ports for any sign of damage.
Unfortunately after looking at the computer installation details i was at fault, although i have had the computer for well over 2 years and this is the first time it has happened. My Dell Dimension 5150 has 7 USB ports 5 at the back and 2 in the front and it appears that i have connected the keyboard and mouse to the wrong ports. There are two ports at the bottom allocated for the keyboard and mouse and for some reason i had them in the top three ports hence my problem but still not sure why it happened. Anyway my Dell Dimension 5150 is now running OK and no further help is needed.
You will not be able to install windows on that system. The processor speed is about 80Mhz and the ram that came standard is about 32MB. That is not close to the needed minimums of XP. You can install Solaris or versions of linux to make it a working computer. This computer uses a non-standard monitor port. The keyboard that works on it has the mouse and keyboard as one PS/2 connection.
It's not the K/M, there probably was a surge that went through, and effected the motherboard in the computer. so you can take it to your local computer shop. But, before you bring it there, back up your important files because they might have to format your HD.