New PC Problem

Very sad....*gigasmilies.googlepages.com/109.gif
I think your HDD gone just because of bad power supply.You should have taken a branded PSU like cooler master ,vip.Wait for few more posts so that you can get a clear idea....

your configuration looks compatible to each others. So, I think compatibility is not a issue.

Other causes can be:
1) Hard disk
2) Over heating
3) Bad/ Insufficient power supply.

if ur using Vista then use the vista dvd to troubleshoot startup probs.
if ur using xp press F8 during bootup and 1st try Last Known Good Boot and if that doesnt work try Safe Mode.
hope ur werent trying to install 2 antivirus software.
ur prob seems to be more of a software issue than a hardware one.

@ Systemerror, Are u getting the bios info in the screen before the OS informations ? Or the screen is just black ?

Yes i get the bios screen and it shows windows loading then blank screen...used to be blue first... but sumtimes the hdd doesnt detect and after restart it makes a weird sound at startup.. with hdd light on.. n cursor blinking like dos.. but after i disconnect the hdd i get the bios.. after connecting the hdd back it loads windows n again blank screen... so i guess its the PSU killing the HDD or insufficient power or bad power cable causing HDD malfunction.. or mabe im confused.. so i called up the computer assembler to take it back n have it checked properly.

anyways thanks for the replies

Sounds like a power supply problem. Check if the 4 pin/8pin additional power connector is plugged in properly to the mobo (this is in addition to the 24 pin ATX power connector). If this is not connected properly, system wont get enough power and will behave erratically.

U cud also try removing the power connectors and connect again