Have a Packard Bell Platinum 1560 ..upgraded to win98 & put in memory card i THOUGHT would upgrade but when restarted it said i had downgraded and asked me to "boot" which i did and was able to shutdown properly. Reinserted the "original" chip and now i have nothing...doesn't seem to recognize the mouse, keyboard and the monitor is total black. tried win98 boot disk, pb recovery disk.. still nothing. everything was working fine after the 98 upgrade until i did that... if you can PLEASE help me asap. thanks SO much!