Usb overvoltage detected system will shut down in 15 seconds

Try another keyboard. USB or PS2

this message popped up because one of the device which you connected to the usb of the pc was overdrawing current i.e more than 5V DC. Hence, the built in system security gave this message and will shut down your computer in 15 seconds. In order to avoid this message first remove all the usb items connected to it and then connect one by one and detect the faulty one and replace.

Re Install Operating Sysyem use "Repair" option.

Shut the power down to the computer all the power and pull the power cord out, remove all usb devices except the mouse and keyboard, Turn the unit back on and see if this fixes the problem, if it doesn't then you will have to go into the computer and clear the c-mos this will allow you to get into the bios screen from there you can set up the computer again. Check you manual for the instructions on bios reset, most times it is just pins 2+3 that need to have a jumper installed to reset it. READ THE MANUAL PINS 2+3 APPEAR ON MANY THINGS ON THE CIRCUIT BOARD

asus manual .pdf bios Version 1301 is the last one what is your version

also does your power supply support 1amp for 5VSB

A vehicle alternator control device in which, when a signal detection portion detects a determined input signal, an operating mode of an overvoltage warning portion is switched to a detection operating mode by an overvoltage warning operating mode switching portion. In the detection operating mode, the overvoltage warning portion is activated when a voltage below a determined voltage has continued for a time that is less than a determined time. Accordingly, checks related to the operation of the overvoltage warning portion can be completed in a short time at a plant or the like.

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hi, pl check for viruses, scan the system, and go to cmd prompt and issue this commnd at c:\ shudown -a and press enter to disable reboot and scan the system and check any hardware issue.

1) if you have nothing in a USB port you will need to set bios
Try removing M/board battery for 2 to 3 hours some people say less then replace it most times it should set BIOS back to default
also check setup of hard disks master slave etc

Last resort with 15 seconds you should be able to see
press ?? key to access BIOS next boot keep pressing key see if that works

Situation Remedies If you have encountered this error and would like to fix your computer, here are some remedies for each situation:
CMOS Battery Not Functioning Properly: If you suspect your CMOS battery is not functioning properly you can easily change it. Before changing your battery, reboot your computer to make sure that the error still exists. If it does, go into your CMOS and write down all of the settings. If all settings are lost, you can usually get them from your computer manufacturer. Now locate the battery and remove it, you might need to consult your computers manual or tech support to remove your battery. Take down the CMOS batteries information such as volt, size, etc. Once you have your new battery, you can replace it and reenter your CMOS settings. If your battery was the cause of the CMOS Checksum Bad Error, you should have remedied the problem.
Your BIOS has Been Updated (either by you or possibly a virus): If your BIOS has been updated recently, your CMOS settings may have become reset. Make sure that the values entered in the BIOS are correct or simply reset them to the default settings. If you believe that a virus updated your BIOS settings, run a virus scan and make sure that the BIOS settings are back to the default.
The Computer Was Shut Down Improperly: Sometimes when running MS Windows, if you shut down your laptop or desktop without first properly shutting down your operating system it will corrupt the CMOS settings causing the CMOS Checksum Bad Error. You can easily avoid this error by making sure that you completely shut down your computer before turning off the power. Usually this entails going into the Start Menu/ Turn Off Computer/ Shut Down. If you received the error, shut down the computer properly, if this is the cause of the error, the error message will not return.

cheak bios settings diable serial port parrel and any onbord stuff u wont use ok