hi, i need some help. i have a dell dimension 8300. when i boot up my PC i get a black screen with the mouse cursor on. I can move the cursor but nothing else comes up. this happens after the windows xp loading screen. before this started happening i was getting a message every time i booted up saying system battery voltage low. then this problem started. i have replaced the cmos battery and resetted my bios settings, but to no avail. i have tried changing the order the drives boot up in, and putting the cd drive to boot first, so i can use my xp cd to do a repair install, but this didnt work either, i still just get the black screen. Help!!