Nano refuses to be seen by XP

That may be a design mistake of DSO USB port. we use the 18K trigger resistance for it and in 30 pes beta we found some computer can’t see it …
In these 100 pes we have change the resistance to 1.8K and the issue should be fixed , please do me a favor to check the R24 in the board , is it a 1.8k resistance (182).