can anyone help me

i have an hp dv2000 laptop pavillion and i upgraded to windows 7, from windows xp. the computer came installed with vista.

recently i upgraded my memory from 2G to 4G to kingston memory modules.

my computer was working fine til this morning when i was at work, i put it to sleep then this morning when i connected to my monitor and my usb keyboard and mouse the usb did not work. so i try to reboot it. i dont know what to do about this error why it would freeze like that. it has never gotten stuck before. i think this time it crashed but i can't tell. im willing to bet this might have to do with update. thats what i have about automatic updates, the crap updates stuff without you knowing and then you get unexpected problems like this. i thot microsoft was making a committment to optimize windows, but now i see its the same vista crap.

so when i tried to reboot, it would hang at the shutdown screen so i forced it by pressing down on the power button and restarted it. so i wanted to know why it was stopping at the shutdown screen so i tried again to so shutdown from the start menu and the same result.

now not even my usb ports work

has anyone had any expirience in this problems

thanks