Tag Archives: code 39

vista loses DVD driver (matshita UJ-891S ) code 39 on a toshiba laptop

Computer Aid Posted on by

Customer find he suddenly cannot use his vista laptop to read any cd/dvd discs.

I notice that the vista device manager shows the dvd drive (a matshita uj-891S) has a code 39 error.

On the net, some people suggest getting the most recent drivers (but vista believes it has the most recent drivers anyway), and others suggest the MS support page at: http://support.microsoft.com/default.aspx/kb/929461

I start going through the MS instructions, but I see that there in no registry entry for UpperFilters, just LowerFilters.

I wing it, and delete the LowerFilters setting, and after a reboot, the drive is usable again!

Vista upgrade breaks keyboard driver (code 39)

Computer Aid Posted on by

Another Vista problem (looks like I underestimated the number of vista problems I’d get this year…).

This time, customer upgraded XP via: vista home premium upgrade academic

And his keyboard stopped working. The keyboard works fine on other PCs, and other keyboards (usb and PS2)  would not work.

Device manager shows a problem with the keyboard (code 39)

I tried the obvious: update the driver, but vista would say “you already have the latest driver”.

OK, delete the driver… but the bad driver gets reinstalled from the driver cache.

After some searching, I found a vague reference to various drivers not working for upgrades, whereas clean installations are no problem.

So, using the technique from the “windows secrets” newsletter, I did a fresh install of the vista 30 day trial (with no license code). I then did a vista upgrade, with the correct license code… and all went well.

There was a slight hiccup with validation and updates… I got an error message about a possible problem withe the date and time… I adjusted the time (it was out by 1 hour)… but I still got the error message… I eventually realised that the year was set to 1999 🙂

easily fixed, and customer is happy.