I have a PB 1508/n. Just recently bought 4gig of ram 😀 , installed that no probs… Got myself a PCIe Nvidia card 7000 series. And everything runs ok. 😀
After reading the instructions for the graphics card it said that the PSU should be at least 300watts. So with this in mind i got a new PSU… 😀
Installed that which wasn’t too bad.. Had to remove 2 stcks of ram to get the cable for the board in nicely, but then replaced them.
Now this is where all my troule begins….. 😥
It seams that when the CPU is running at 100% there is a loud noise coming from the monitor, (A Constant high pitched tone) Even with the sound cable UNPLUGGED the noise is coming out of the speakers on the monitor. When the CPU drops to 99% or lower the noise stops. 😕
As you can image when the computer is turned on the noise is on for a while until the computer settles down. 😕
This will be the second power suplly that i’ve tried… What could be causing this? ❓
Any help would be nice… Cheers Dave 🙂 😛