Dimension 4550  w/xp  40 gig hdd 256 ram  and worked great for last two years.

problems started as soon as i bought a  964 all in one printer. after installing the software it needed to reboot,  it gave me a black screen with flashing dot in upper left corner.

after 3 ctrl-alt-delete it then gave a blue screen saying call tech support.

since it worked before i installed printer i pulled usb cable and restarted PC all was normal.

plugged in printer and it worked, went to dell and updated the software as well as firmware .restarted pc same problem. pc would not load windows all i got was a  little flashing dot upper left corner, unpluged usb and restarted.

tech support said to reset bios to default,,,that seem harsh. then on second call said i needed to update BIOS was beginning to think there a bunch of bozo's.

reinstalled all software (first i uninstalled all software) and tried this many times

and printer will work every thing i tested (as long as I plug-in printer after boot up) haven't tried the fax,,,even though i am reading post about that being a problem.

any one ever have this problem or know how to fix? thanks to all who viewed this post.