Dell xps 720 will not boot with usb installed. Bios Issue?

Darskage

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Jan 31, 2016
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I have a dell xps 720 the dell express service tag (7CDK2D1) Says that the pc in actually a XPS 710. these two do not have the same bios. The Pc will not boot with and usb install (i:e Logitech unifying receiver). internal usb ports boot without issue. I currently cant load any bios i receive a communication error or i/o disk error. I load ubuntu from a separate HDD and windows 7 and neither platform could load. I have tried from a SD card from the memory card reader but it will not boot from and SDcard. Does anyone have any other suggestions. CN-0U723D-13740-05D-001A the the full part number on the tag that is on the motherboard and if someone has any suggestions?
 

Darskage

Reputable
Jan 31, 2016
3
0
4,510
CN-0U723D-13740-05D-001A Is the numbers off the Tag on the mb can anyone tell witch one this is cause while looking it up it seems to be for ither the 710 or 720? witch support different bios.