Ok bare with me as this problem started over 2 weeks ago and i have been away working.
One night i was streaming a film to my ps3 from the pc with ps3mediashare i think its called, and about 1 hour 45 mins in the film froze so i went to check on the pc and it had completely locked up, i couldnt even ctrl,alt del to restart it. so i switched it off on the front of the pc and rebooted, once i rebooted the powerlight on the front kept flashing like the psu was failing to deliver. It was late so i left it and went to bed, next morning i got up put the pc on it started up and i thought to be safe i would backup my files from the c drive to d but the pc cut out and was showing signs like before of faulting power. i checked the fans inside to make sure they werent clogged up an running, i tryed another power cord and also another power socket. the pc would just keep rebooting and rebooting. so i ordered a new psu which came while i was away and i fitted this lastnight.
When i first turned the pc on it gave me 3 beeps and i found it was due to the ram was loose once i removed it an put it back in the slot it was fine started to boot then came the BSOD i ran MEMTEST today and it gave me no errors at all nothing. so now i am totally lost as what todo, A clean install maybe of xp or the windows 7 i have here.
HELP ME PLEASE I AM NOW LOST LOL
this is the code which i have been getting on the BSOD
0X0000007E ( 0xC0000005, 0x00000000, 0XF78A1F1C, 0xF78A1C1C
i have not installed nothing new before this happend when it froze over two weeks ago!