Guys can i ask for some help? pls

my head is aching cause i dont know how to repair my computer. here is the story:

last 2 days ago i opened my computer. there was a disk check up. then after that i got a "lsass.exe" error. it took me a while before i decided to reinstall my windows. so i did it. during the reinstall, it asked for my windows cd 1st, then nvidia cd, then lastly windows cd. but on the last part, i got some errors. it says some files cannot be located. i cant locate it so i just pressed "skip". then finally my pc worked. i was so happy.

after 1 day, i had a problem again. i opened my pc but it doesnt show anything. my monitor power light just keep on blinking and blinking. i tried to reconnect all my power cords then it started. there was an error saying system32/startup cannot be found. so again, i reinstalled my windows xp. and again, some of those files were not found.

and earlier this morning i had same problem again. monitor just keep blinking and not showing anything.

here are the list of the files not found when i reinstalled my windows cd.

lcwconn1, lcwconn2, inetwiz.ex, icwhelp.dl, icwconn.dl, icwutil.dl, icwrmind.ex, icwdl.dl, icwx25a.du, icwx25b.du, icwx25c.du, icwip.du, phone.ic, phone.ve, state.ic, msicw.is, msn.is, suport.ic, msobshel.ht, mswrd832.cn, install.in

It sounds like the drive is having a hard time reading the disc. Does it look scratched or have smudges? Try wiping it off with a few drops of water and a soft cloth.

You're getting video display when you're installing windows. So the cords and video card are secure. It's likely a driver issue. Try booting into safe mode (f8 on startup) and see if you get a display there.