quite pissed off tbh...

[Flisker]

NEW INFO: I have ordered the new PSU It will be with me tomorrow Goodbye 160W (still confused how I ran all what I did on that) and hello 450W

[Recursion]

He just found his old PSU was actually 300w. LOL

[Flisker]

oh well a new one will help

[lolwut]

I was about to say it would've made more sense to nick a PSU of 450W to see if it made any difference, rather than buy one.
But you've already got one...

[Dentafrice]

Do your Dell Diag lights show anything is wrong when it starts up? I've had this happen.. and they can tell you quite a bit mate.

[Dan!]

provide power to the computer? i think psu stands for power supply unit?

Correct.

[Flisker]

Do your Dell Diag lights show anything is wrong when it starts up? I've had this happen.. and they can tell you quite a bit mate.

The power light just stays orange.

[Stephen!]

Did you get your new PSU?

[Recursion]

He did, and found out the Dell BIOS is on a Foxconn motherboard and that Dell have stopped him installing a quad core CPU LOL

[Luke]

i had this exact problem

i solved it, by unplugging everything (like PCI cards etc), unplugging prcessor power cable and fan. I took CPU out, cleaned thermal paste off (and off fan), put new thermal paste on (only the tinyest bit this time) plugged everything back in and worked