Big Issue can someone help?

[mac_cnc]

System specs:
3ghz P4
MSI 865PE Neo2-V
1gb (512 x2) Memory

User put in a USB thumb drive to the front ports, thought he spelled a burning smell and then he shut it off. Now it only spins up the fans on boot up....no VGA signal.

What I have done:
The usual swap of components and removing everything but the barebones stuff. Tried a different power supply and different video card. Still nothing. Any thoughts. I dont see any indication of scorch marks.

Help would be very wonderful. Im thinking Mobo is bad.

 

[mac_cnc]

An update. I have now eliminated all possible avenues except the processor and motherboard. How could a thumbdrive smoke both of them ???!!!???

 

[Shmuckety]

Maybe the drive shorted the mobo.

 

[BlindedByScience]

Sounds like the power / ground connections on the header to the front panel got reversed. Not an issue....until a drive gets plugged in then you short power to ground. Could have burned up the USB controller....or damaged the +5 supply on the PSU.

Get in there with a volt meter and check the PSU rails.

Good luck - B.B.S.

 

[mac_cnc]

See the issue im seeing here is he had been doing this regularly with the drive for over 13 months without issue. Its a thermaltake purepower powersupply BTW.