SANDWICHMASTA

Hi, I seem to have a serious problem with my computer

It's running windows xp sp2 and all these problems literally appeared overnight:

- When I log in, it seems to lag at the logging in screen, and after that it shows my desktop background with nothing on it for another good five minutes

- there is no task bar when i start it up, and it wont seem to let me drag it up, the only way ive gotten it to appear is to turn on AOL deskbar (i can turn it off after it appears and it'll stay)

-open windows wont appear on the taskbar for that matter either, they appear as boxes above the taskbar

-it won't let me drag items or even send them anywhere (flash drive etc.)

-it won't play any sound, i have a fairly new sound card and it even acknowledges its there, but still won't play anything

-windows media player won't boot up; stating "Can't preform operation, low memory"

-can't copy, can't paste

- backgrounds won't appear on websites

theres probaly more, but I can't think of any off the top of my head

Like i said they literally appeared over night, and i've tried almost everything to get rid of them including: system restore(says it can't help my computer and to restart and try again, but still appears), scanning for viruses(with Nod32), reinstalling windows(the install button does'nt seem to do anything), and many more.

I would greatly appreciate any help, as you guys are my last hope short of sending it in for repair...