E6420XFR no touchscreen???

[U2CAMEB4ME]

Good day all,

Started working on some E6420XFR touchscreen laptops.

I now have 2 in a row that the touchscreen does not work and is not recognized as being installed???

As with all my XFR's I do a BIOS update to version A24.

With these 2 "So far" both have been updated to version A26 which is the E6420 BIOS not the E6420XFR.

https://www.dell.com/support/home/us/en/19/product-support/product/latitude-e6420-xfr/drivers

Could someone from Dell please remove the E6420 BIOS update from the E6420XFR driver support page!!!!!

I am not sure if this is what caused the touchscreen to disappear but I have tried going back to A09 and then back to A24 with no success.

I know this is a stretch but  has anyone encountered this before???

Could the E6420 BIOS cause this type of problem if it is installed on the E6420XFR???

I do not want to experiment on a good working E6420XFR "YET"

I can install the E6420 BIOS on an E6420XFR to see what the result is but if I can not recover from it I do not want to try yet.

Thanks for any help,

U2

[U2CAMEB4ME]

WOW!!!

Not one reply.

No long drawn out explanation if the E6420 BIOS can or cannot be installed on an E6420XFR???

No links to other threads that may have a solution???

No colored charts, not even a live with it or purchase a new computer???

I guess I will just bite the bullet and experiment on the worst unit I can find.

Not asking for miracles but maybe someone that actually works on computers would have replied!!!

Regards,

U2