ok,i start it from here,this pc was using windows xp sp2,256mb + 128mb Ram,around 2Ghz processor. i have SOMEONE selling me a RAM 512,so i replace the 256mb with the new 512mb ( actually it's a 2nd hand ) then turn on the PC.after the windows loading screen it's going BLACK for a second (like normal ) then appear the blue screen saying that "physical memory dump"..then i guess it could be from the RAM.after that i take out the RAM,try it 1 by 1 with the PC but none of its can bypass the blue screen.i have no idea what to do then i just format the Hard disk,then try the new RAM together with the
128mb after that the 256,it's just fine..so,the question are,what up with the "physical memory dump"?ok go here http://www.memtest86.com/ , and download the program , burn to a CD at a slow speed 6x i think will be fine..... once burnt , reboot with cd in machine , make sure you tap f8 and boot from your dvd/cdrom drive ...... once thats done you should see a blue screen which will run some tests on your memory , come back and give us the results ......

I personally think its better downloading the zipped ISo and burning it with power-iso .......

http://www.poweriso.com/

&

you will need this to open the zipped folder http://www.rarlab.com/

cheers Tony hummm...how can i use the cd?i already solve the problem by formating the PC & now its fine,how should i know what CAUSE it?thats all.by the way,tq 4 replying..Case closed...... when you ask for are help , dont go behind are backs and wipe your computer ........... we have been trying to help you and you did that