I have a pc with windows xp. 1.7 GH'z 256 Mb of ram, 40 gb hd. When i boot the computer it turns on but it STAYS on a black screen. I tried to press F8 to go into safe mode but it wont work. I try to Re-install Windows Xp and it gives me this ERROR message Stop:0X0000007F. i changed the memory from my other computer and i still gives me the same error message. How can i fix this? thanks for your helpa quick google search brought up a microsoft article

check it out at http://support.microsoft.com/kb/137539

According to Microsoft,

"The above STOP error means a trap occurred in kernel mode and the trap is either one the kernel is not allowed to have or is always fatal. The most common causes of a STOP 0x7F are:
•   Low-level HARDWARE CORRUPTION, such as corrupt memory (RAM)
•   Mismatched memory modules
•   A malfunctioning motherboard"Travel Here and download MemTest.
Use the file to create a bootable CD/floppy.
Re-boot with it and let it run a few hours.
Any errors at all and you will need to replace the RAM.Everytime i start up my computer i GET the STOP: 0x0000007F message...Its not the main HD it is the secondary HD I have tried usin the xp disc but it wont let me do anything....How can I fix this problem PLEASE PLEASE help me all i need to do is recover the files on this HD