Long startup after installing RAM/GPU (Dell Inspiron 531s)

[swiftysuspect]

I've posted this on dell's forums and haven't found a solution yet, so I'm asking here.

I've recently upgraded my Dell Inspiron 531s with a Sapphire Radeon 5570 Low-Profile card, and 2 GB of A-Data DDR2-6400 ram. After updating the BIOS to the latest version, and the latest ATI drivers I noticed my computer was a lot faster. Loading times, gaming performance, Vista scores etc. were a lot higher/better.

The only noticeable difference is on starting up. Windows itself loads very fast, however there is about 30 seconds when the computer is in an 'off' state and seems to just hang. I turn the computer on, and I hear nothing but I think is the GPU fan, and my monitor is in its stand-by state (orange light). About 30 seconds later, the computer finally turns on (all fans turn on) and windows boots up normally.

It's been about 4 days so far and everything seems to be fine, just that problem loading up. Also, when I awoke my computer from sleep mode this morning 15 seconds later I got a BSOD. After rebooting everything seems to be fine again.

It never had that problem starting up before I added these 2 components.

Any ideas?

For reference:
Dell Inspiron 531s
Microsoft Vista Home Basic 32-bit SP1
AMD Sempron 3600+
A-DATA 2 GB DDR2 6400 ram
Sapphire Radeon 5570 Low-Profile Graphic card

 

[Tetrophile]

Just want to add to this old thread. I have the same problem with new 5450 on my inspiron 531s, which seems to verify the idea that there is an incompatibility with 0ry206 mobo and Radeon 5xxx series.

Somebody successfully put a 6xxx series in an Inspiron 531s? Would very much like to know that, if anyone can write a couple of words about it.

I made a new post about it, but it's old gear and not really nowadays trend... Thanks a lot.