hello, im encountering a lot of problems with my pc since last month. my pc was always slow and hanging, i guess it was because of a virus that it also affected the system folder. and so i decided to format my hard disk and install new OS, but while installing i encountered lots of errors and so i always try to install it again, but still it cant finish the installation, i check my hard disk but it seems ok, i try to remove the memory, drives etc. and then put it back, when i opened my pc this "floppy disk error(40)" came out on the screen just as before it boot from else where. i tried to remove the floppy itself and the IDE cables thats connected to the floppy, but it still there. i removed the cmos battery and bring it back, but the problem is still the same. and now, its not only the floppy disk error but also this, "theres a change in CMOS.. blah blah blah! " i cant boot from anywhere since then even if its from CD, HARDDISK, i cant even go to the BIOS and anywhere else. its all stuck up there. i cant control anything, even if i press F8, F9, F10, DEL or even ESC. i also tried to reset the BIOS and another problem just occured. now there are three problems that being showed when i open my pc. and nothing else. what will i do? i cant even fix my OS. i dont know where is really the problem. is it in the mother board already? power supply? please help me, this is the first time i encountered this kind of problems. my pc is PIV and its been with me for about 5 years, and now i dont know if im about to trash it and buy a new set. waahh! who can help me??