Yesterday i received the ATI Radeon HD5770 1GB PCI-E as a replacement graphics card for my 512mb X1950 which has had ridiculous over heating issues. I installed the card however upon booting up my pc the graphics card boots up (fans spinning etc) but the monitor does not pick up a VGA signal. Ive tried both ports on the card and neither seem to send a signal. So far i have tried:
1. Uninstalling previous Display drivers. No change.
2. Going into bios and switching to onboard VGA. The computer would do the same as with the new graphics card (no VGA Signal).
3. Disabling the onboard VGA. There was no option to disable any onboard VGA in display adapters nor on the BIOS.
I dont think its a problem with the graphics card as it is brand new and i dont think its a problem with the cables to my monitor as my old graphics card still works fine. I've searched countless forums to find an answer and it seems many others are having this problem.
Some seem to think its a PSU problem, but the specs ask for a minimum of 450w and i have a 500w PSU.
My specs are:
Processor: AMD Athlon 64 3800+
PSU: Jeantech 500w
Core speed: 2.4mhz
4GB DDR2 Ram (2 x 2gb)
I dont really want to try a BIOS upgrade as there really arent any available for this model and ive been told its a risky process that wont make that much of a difference anyway.
The specs for the graphics card can be found here:
really would like to know why it is not working due to the £100 spent on it. Even if i know it wont work i just need to know what's causing the problem. If anyone can help with this issue it would be greatly appreciated.