well im trying to make msdos boot usb windows 10

[Frederick2790]

but hp usb tool keeps saying it cant format my usb drives any help

 

[Colif]

I don't know if this works on win 10 but it might: http://www.howtogeek.com/136987/how-to-create-a-bootable-dos-usb-drive/

 

[Phillip Corcoran]

Pen drive memory chips may be corrupt (very common) so buy a new one (a well-known brand, not some cheap, obscure rubbish )