deano40

hi it was the hard drive, i had to get a new one. thank you for your help :)

thank you for the reply but but thats what i thought so tried that first. sometimes when i turn it on it powers up then turns off after a couple of seconds, then other times it says cant find boot manager, also no hdd. i changed the power unit 3 times also, everything on the mb has been replaced. could it be something to do with the rams because even though they all register as working ok in the startup menu, when vista starts up it says its only got 3n half yet the start up says 6

i have a desktop custom built. running vista ultimate 5gb ram, 700hd. i know this is strange but if i stand my tower upright it wont turn on, yet if i lay it on its side it works perfectly. its been happening for a few months so i just lay it on its side but im moving soon and im going to need it stood up, can someone help. oh and it is switched off when i move it obviously. thanks