Bootloop + no pc connection usb

Hey!

After trying to install a custom rom to my nexus 7 it just get's in boot loop. I was then gonna reset it to factory rom. 5.1.1 and while doing "fastboot -w update image-nakasi-jdq39.zip" the USB cable accidently got ripped out while updating. So everything lost connection and now i am stucked with a boot loop on google logo and I cana not get into the nexus 7 via USB. I get that the device is connected but not under the My PC folder.

As you can see in this image: https://gyazo.com/be5546434bcc99c9705bdd...

Hope some1 can help me.

Thanks